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FEND One Foldable Bike Helmet - Adult Mens and Womens Bike Helmet - Collapsible by 50% of Original Size - Safety Certified for Bicycle Road Bike Scooter Cycling Commuter Helmet

4.5 4.5 out of 5 stars 287 ratings
Price: $99.00 Free Return on some sizes and colors
Matte Black

Size Chart
US Bicycle Helmet
Brand SizeHead Circumference (in)
S21.5 - 22
M22 - 24
Brand Fend
Color Matte Black
Age Range (Description) Adult
Size Medium/Large
Special Feature Folding

About this item

  • FOLDABLE BY 50%: Easily fold and store comfortably in any bag or backpack. FEND is an adult bike helmet that is ALWAYS with you — finally, a helmet designed for your lifestyle.‏ ‏‎ ‎
  • AWARD WINNING DURABLE DESIGN: FEND helmets are built with a durable ABS shell, ultralight PC, high impact absorbing EPS core, and slick matte-finish. 2018 Red Dot Design Award Winner. 2018 Edison Award Winner. Designed and engineered in New York City.
  • SAFETY CERTIFIED BIKE ACCESSORIES: FEND exceeds US CPSC and European EN1078 safety standards for bicycles, skateboards, and e-bikes/scooters under 20mph.
  • COMFORTABLE & LIGHTWEIGHT: Our foldable helmet has an integrated dial fit system for precise adjustments and additional adjustment padding for the perfect fit.‏‏‎ See our size chart for more information!
  • 100% HAPPINESS GUARANTEE: Our #1 priority at FEND is your happiness. This means we stand by our product 100%, If you have a problem, we will solve it. Refund it. Send you a new bicycle helmet. Whatever it takes. Just reach out to us!

Additional Details

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Product Description

Redefine your ride with the ultra-compact helmet

Folds By 50% - Easily fold and store comfortably in any bag or backpack. FEND a helmet that is always with you. Whether you're riding bicycles, scooters, skateboards, or e-vehicles, FEND ensures your safety, surpassing both US CPSC and European EN1078 standards for speeds up to 20mph.

Patented Safety Technology
DESIGN

Patented Safety Technology

Designed and engineered in New York City, built with a durable ABS shell and a high-impact absorbing EPS core, featuring a durable matte finish.

FIT

Comfortable, Lightweight, & Adjustable

No matter your head size or shape, we have you covered. Using our integrated dial fit system, adjustable straps, and extra pads, we’ve created the perfect fit just for you.

FEND One Fit Dial
Ultra-Compact Fold by 50%

Easily fold and store comfortably in any bag or backpack. FEND is a helmet that is ALWAYS with you — finally, a helmet designed for your lifestyle.

FEND One Fit Guide

Fit Guide

Find a Measuring Tool: Use a string, shoelace, or USB cable to wrap around your head just above eyebrows.

Mark & Measure: Mark where string overlaps and measure against a ruler or yardstick.

Choose Your Size: Small: 21½ - 22in (or) 54 - 56cm, Medium/Large: 22 - 24in (or) 56 - 61cm. If you’re in-between sizes, we recommend sizing up.

Commitment to the Earth

We are proud members of 1% for the Planet and have pledged to donate 1% of our annual sales to non-profit organizations supporting environmental solutions. We are committed to reducing and offsetting our annual carbon emissions.

Commitment to the Earth

Is the FEND Helmet Safe?

Yes! FEND exceeds US CPSC and EU EN1078 safety standards for bicycles, skateboards, and e-bikes/scooters under 20mph.

How Do I Know My Size?

The FEND One helmet is offered in two sizes. The Small size measures 54-56 cm, and the Medium/Large size measures 56-61 cm. If you are on the cusp, we recommend sizing up. Please refer to our fit guide above on how to select your size.

How Does the Helmet Stay Secure on the Head?

Once fully opened, the helmet clicks into place and is designed with our patented safety locking mechanism to ensure the helmet will not close on impact. The adjustable straps and the rear dial fit adjuster allow for a custom fit.

What's in the box?

The FEND One folding helmet comes with an extra set of thicker foam pads, and a user manual.

Product information

Technical Details

Additional Information

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
287 global ratings

Customers say

Customers like the fit, breathability, safety and ease of folding of the bike helmet. For example, they mention it fits comfortably, it has plenty of ventilation and it's perfect for a safe city commute. That said, some disagree on value.

AI-generated from the text of customer reviews

49 customers mention46 positive3 negative

Customers are satisfied with the quality of the sport helmet. They mention it's a high-quality, lightweight helmet that breathes quite well, and comes with good quality pads to customize the fit. Some say it'd be superior to other brands. Overall, most are happy with the product's quality and durability.

"High-quality, lightweight helmet that breathes quite well. The built-in sunglasses port is a great addition that I make frequent use of...." Read more

"...And though it shouldn't matter, I like the simple design of this helmet as opposed to those that have a more aerodynamic look, so to speak...." Read more

"This helmet is AMAZING! It’s strong and durable but easily folds up into my bag. I citibike everywhere and this helmet has made it so easy...." Read more

"...This Fend helmet saved my life! Yes, it still manages to fold and held its shape, during and after the incident!..." Read more

41 customers mention41 positive0 negative

Customers find the bicycle helmet easy to fold and fit into a backpack. They also mention it's portable and saves space when folded.

"High-quality, lightweight helmet that breathes quite well. The built-in sunglasses port is a great addition that I make frequent use of...." Read more

"...I know that's a bad reason, but it's the truth. This folds down enough to easily fit into all of my bike bags and even the small backpack that I..." Read more

"Fits in messenger bag easily. Bought high visibility stickers which work well. Meets government safety requirements. Easy to collapse and pop back...." Read more

"This helmet is AMAZING! It’s strong and durable but easily folds up into my bag. I citibike everywhere and this helmet has made it so easy...." Read more

33 customers mention24 positive9 negative

Customers like the fit of the sport helmet. They say it fits comfortably, is easy to adjust, and feels nice. Some mention that the helmet is tight but it's very adjustable.

"...Surprisingly, it does not compromise the helmet's comfort.Taken as a whole, this protective headgear is excellent...." Read more

"...Of course I hope never to give this the ultimate test, but it feels like a sound helmet and works for the way I bike. I'd definitely buy this again." Read more

"...Two, it is uncomfortable. Three, there are no instructions on how to swap out the side padding without destroying the default ones...." Read more

"...I can store it anywhere. fits sort of tight but it is very adjustable. Recently part of the padding detached itself from the plastic...." Read more

10 customers mention10 positive0 negative

Customers like the safety of the bike helmet. They mention it's perfect for a safe city commute, it feels safe, and clicks into place and closes easily. They appreciate the folding feature and the safety certification. Overall, customers say the protective headgear is excellent and is the best helmet for their daily NYC commute.

"...Taken as a whole, this protective headgear is excellent. Do you think it's twice as nice as a helmet costing $100? Really don't know what to say...." Read more

"...Bought high visibility stickers which work well. Meets government safety requirements. Easy to collapse and pop back. Very satisfied." Read more

"...Going to cafes and restaurants, the beach, etc. Bike helmets are important for safety, especially in an urban environment, but boy are they clunky...." Read more

"I'm happy that I bought this--it fits in my backpack so I can travel with it easily. I like to use the city Divvy bikes...." Read more

9 customers mention9 positive0 negative

Customers like the breathability of the sport helmet. They mention it's very breathable, has plenty of ventilation, and lets the air flow through. They say it'll keep their head cool and is one of few foldable helmets with ventilation.

"High-quality, lightweight helmet that breathes quite well. The built-in sunglasses port is a great addition that I make frequent use of...." Read more

"...It's also cooler than I expected, which is a real benefit as I live in a hot and often humid climate...." Read more

"...it doesn’t scratch easily and has plenty of ventilation...." Read more

"...And it's one of the few foldable helmets with ventilation so your head doesn't sweat. Overall, I'm happy with this purchase!" Read more

12 customers mention7 positive5 negative

Customers are mixed about the value of the sport helmet. Some mention it's absolutely worth the investment, while others say it'll cost a lot of money.

"...but I think it's worth it at its regular price...." Read more

"...It is worth every penny, at first I thought, this helmet is too expensive, but this incident definitely made me a believer!..." Read more

"This is a relatively expensive helmet but there are a few problems. One, it is much more heavy than my regular cycling helmet...." Read more

"...I like the fact that it is portable and easily packable. Good purchase." Read more

4 customers mention0 positive4 negative

Customers are not satisfied with the weight of the sport helmet. They mention that it's heavy and uncomfortable on their head.

"...One, it is much more heavy than my regular cycling helmet. Two, it is uncomfortable...." Read more

"...It's also a bit on the heavy side even for a small, so I don't think I'll even bother exchanging it for the Medium/Large...." Read more

"The weight is heavier and bulkier then I expected. But it’s easy to carry around since its collapsible...." Read more

"...thicker pads that come with it and they helped somewhat, but still felt heavy. Weighed it and its 50% heavier than my road bike helmet. Returned it." Read more

saved my life!
5 Stars
saved my life!
If anyone doubts this helmet cannot protect you, let me be the first to say, I have witnessed first hand for myself! This helmet saved my life! It is December 26th at 7am riding my bike during a wet slippery morning. My bike slides from some wet leaves and sticks, I crash and bang! I hit pavement and this helmet saved my teeth and my noggin. All I had was a headache from the impact and a sore neck. I’m sure without the helmet I would have missing teeth and a ride to an ambulance with the impact! Just the drop alone from my height 5’,9” would have definitely given me brain damage or missing teeth! I hit my head on pavement, luckly no brain damage, just sore wrist, hip, and just scratches. Wow, just wow, how protective this helmet by fend was, 8 stars! It is worth every penny, at first I thought, this helmet is too expensive, but this incident definitely made me a believer! I don’t know if similar helmets or less expensive helmets would have done the same job, but I would not like to know or try that again! Thank you, Fend company! Outstanding product! This Fend helmet saved my life! Yes, it still manages to fold and held its shape, during and after the incident! Best portable lightweight helmet in my personal opinion
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Top reviews from the United States

Hieu D.
5.0 out of 5 stars Perfect fit; excellent airflow
Reviewed in the United States on December 9, 2022
Color: Matte YellowSize: SmallVerified Purchase
High-quality, lightweight helmet that breathes quite well. The built-in sunglasses port is a great addition that I make frequent use of. Sunglasses aside, the front of this helmet is lower than my others. It's not uncommon for the tops of my sunglasses to brush against my brow, and on occasion, I'll feel the helmet pressing down on the sunglasses to the point where they rub against the bridge of my nose. The trendy larger sunglasses wouldn't really go with this helmet, in my opinion.
It's a great shape for my somewhat round head. I agree that it has a polished, professional appearance. Thankfully, I have not yet tried out the safety mechanisms. The sphere may be easily shifted around for a thorough inspection of the helmet. Surprisingly, it does not compromise the helmet's comfort.
Taken as a whole, this protective headgear is excellent. Do you think it's twice as nice as a helmet costing $100? Really don't know what to say. Should I make a second purchase? Yes.
6 people found this helpful
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L
5.0 out of 5 stars Would buy again
Reviewed in the United States on November 29, 2020
Color: Matte BlackSize: Medium/LargeVerified Purchase
I've never been a regular wearer of helmets so I can't compare this to other brands, but this one suits me. The medium/large fits me well, and it's comfortable to wear throughout longer rides. It's also cooler than I expected, which is a real benefit as I live in a hot and often humid climate. And though it shouldn't matter, I like the simple design of this helmet as opposed to those that have a more aerodynamic look, so to speak. And I really appreciate the low-key logo; it's tasteful, not garish like you see on so many products.

But the most important thing for me is the fold. The main thing keeping me from wearing a helmet before was having to lump around a bowl. I know that's a bad reason, but it's the truth. This folds down enough to easily fit into all of my bike bags and even the small backpack that I often carry as a purse. Admittedly, it's a squeeze for the latter, and I don't carry much in that purse anyway, but the fact that it fits means that I'll use it, and using it is definitely safer than going without.

I was lucky to get a nice discount on this (for Prime Day, I think, though perhaps it was some other deal), but I think it's worth it at its regular price. Of course I hope never to give this the ultimate test, but it feels like a sound helmet and works for the way I bike. I'd definitely buy this again.
4 people found this helpful
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RCG
5.0 out of 5 stars Best looking collapsible helmet IMO
Reviewed in the United States on February 21, 2024
Color: Matte BlackSize: Medium/LargeVerified Purchase
Fits in messenger bag easily. Bought high visibility stickers which work well. Meets government safety requirements. Easy to collapse and pop back. Very satisfied.
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L.Bak
5.0 out of 5 stars I am obsessed with this helmet
Reviewed in the United States on February 9, 2024
Color: Matte BlackSize: Medium/LargeVerified Purchase
This helmet is AMAZING! It’s strong and durable but easily folds up into my bag. I citibike everywhere and this helmet has made it so easy. Plus the customer service is exceptional. I lost the clasp and they sent me a new one immediately! Cannot say enough great things about this helmet and company!
One person found this helpful
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Darwin
4.0 out of 5 stars Nice, compact, easy to store.
Reviewed in the United States on December 2, 2023
Color: Matte BlackSize: Medium/LargeVerified Purchase
I bought this because of the folding feature. I can store it anywhere. fits sort of tight but it is very adjustable. Recently part of the padding detached itself from the plastic. Just glued it back.
One person found this helpful
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emmanuel munoz
5.0 out of 5 stars saved my life!
Reviewed in the United States on December 28, 2021
Color: Matte WhiteSize: Medium/LargeVerified Purchase
If anyone doubts this helmet cannot protect you, let me be the first to say, I have witnessed first hand for myself! This helmet saved my life! It is December 26th at 7am riding my bike during a wet slippery morning. My bike slides from some wet leaves and sticks, I crash and bang! I hit pavement and this helmet saved my teeth and my noggin. All I had was a headache from the impact and a sore neck. I’m sure without the helmet I would have missing teeth and a ride to an ambulance with the impact! Just the drop alone from my height 5’,9” would have definitely given me brain damage or missing teeth! I hit my head on pavement, luckly no brain damage, just sore wrist, hip, and just scratches. Wow, just wow, how protective this helmet by fend was, 8 stars! It is worth every penny, at first I thought, this helmet is too expensive, but this incident definitely made me a believer! I don’t know if similar helmets or less expensive helmets would have done the same job, but I would not like to know or try that again! Thank you, Fend company! Outstanding product! This Fend helmet saved my life! Yes, it still manages to fold and held its shape, during and after the incident! Best portable lightweight helmet in my personal opinion
Customer image
emmanuel munoz
5.0 out of 5 stars saved my life!
Reviewed in the United States on December 28, 2021
If anyone doubts this helmet cannot protect you, let me be the first to say, I have witnessed first hand for myself! This helmet saved my life! It is December 26th at 7am riding my bike during a wet slippery morning. My bike slides from some wet leaves and sticks, I crash and bang! I hit pavement and this helmet saved my teeth and my noggin. All I had was a headache from the impact and a sore neck. I’m sure without the helmet I would have missing teeth and a ride to an ambulance with the impact! Just the drop alone from my height 5’,9” would have definitely given me brain damage or missing teeth! I hit my head on pavement, luckly no brain damage, just sore wrist, hip, and just scratches. Wow, just wow, how protective this helmet by fend was, 8 stars! It is worth every penny, at first I thought, this helmet is too expensive, but this incident definitely made me a believer! I don’t know if similar helmets or less expensive helmets would have done the same job, but I would not like to know or try that again! Thank you, Fend company! Outstanding product! This Fend helmet saved my life! Yes, it still manages to fold and held its shape, during and after the incident! Best portable lightweight helmet in my personal opinion
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34 people found this helpful
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Bailey
3.0 out of 5 stars Sides of helmet do not lock back into place when contracted
Reviewed in the United States on February 21, 2024
Color: Matte BlackSize: Medium/LargeVerified Purchase
Though I like many things about this helmet, my major complaint is that it does not lock back into place when in compact mode. The sides just flop out. I thought I had gotten a defective one, so I contacted the seller. And as per the seller’s instructions, sent in a video detailing and demonstrating the issue—no catch to hold the sides in place when they are contracted. If this were to be remedied, this would be the perfect compact helmet.
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techspider
5.0 out of 5 stars Great helmet
Reviewed in the United States on August 16, 2023
Color: Matte BlackSize: Medium/LargeVerified Purchase
Very comfortable helmet. I like the fact that it is portable and easily packable. Good purchase.
One person found this helpful
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