Folding Helmets
Summary: Folding bicycle helmets are easier to carry off the bike and could be useful for shared bicycle system users. There are some decent ones on the market, including some that meet US standards.
Folding a helmet can make it easier to carry, so users of folding bicycles have always found them appealing. Users of shared bicycle systems would like a collapsible helmet they could tuck into a purse or briefcase and pull out when they use one of the shared bikes.
Although a helmet may fold, if it uses conventional materials it still requires the same volume of impact foam. To manage the energy of an impact, the foam must be thick enough to give the head enough distance to stop in a controlled deceleration. So the helmet materials can fold, but the volume of material itself will be the same, limiting the compactness. In addition, the helmet has to maintain its structural integrity in an impact, requiring engineering skill and probably more expensive materials to construct. Designs that escape that rule may be coming, but are not on the market yet. Here is our page on the constraints to making thinner helmets.
The first folding helmet we know of that met the US CPSC standard was the Motorika Snapit, introduced in 1997. It was a clamshell design with one half folding inside the other. We did not like the external ridge left from back to front when it was unfolded in use, and the 16 oz. (454 grams) weight discouraged some buyers. It disappeared from the market soon after the turn of the century, but others have emerged:
Biologic Pango
Biologic's Pango appeared in 2012. The current design by Biologic has two sides that fold into the center. It does not meet the CPSC standard, so it is not available in the US market, but it meets the CEN standard and is sold in Europe.
Cairbull
Cairbull had a model they called the Fender (on Amazon the Ousta), with rigid ribs that fold inward. The ribs seem thin, and the gaps between ribs when unfolded appear very large, so we would like to see test results that prove that it passes a curbstone anvil test. The helmet is very light. The shell is glued to the liner, and on our sample it had already separated when the glue failed in one section (third photo below).
The strap junction pieces do not lock and are so slippy that we would not ride in this helmet. Our sample arrived with no stickers. The "Use and Care Booklet" states that the helmet is EN1078 certified, but that standard requires a sticker on the helmet, so it does not meet at least the labeling requirement. The Certimoov site gives it three stars, but only a half-star for lateral impact. This one is no longer on the Cairbull site, and has dropped off of Amazon. Even Aliexpress now says "out of stock."
Carrera
Carrera introduced for 2013 a folding helmet initially dubbed the "Accordion" model, now known as the Foldable. It is made of strips joined by an elastic frame that opens to provide vents between the strips and folds into a solid piece to reduce the width for storage by about 20 per cent. Said to be inspired by the old racers' "hairnets." This YouTube clip from the 2012 Eurobike show shows it in action, and there is more on it here. There are variations including the Foldable Crit model. Carrera says they fit well because of the folding construction. We don't like the gaps between the strips on the front edge, leaving corners that might do more damage to your face in a crash than a continuous edge would. Initially designed only to the European EN 1078 standard, Carrera says they now have CPSC models as well. Online prices vary widely.
Closca
Closca of Spain produced its first folder model in 2013. It was CEN-certified at that time, but they then obtained certification to the US CPSC standard. The first design consisted of three concentric rings that telescope down inside each other for carrying. For briefcases, the Closca folds to 2.5 (63mm), a little more with the cap brim that comes with it. (Second photo)
The rings give the helmet an unusual round profile.
Unfortunately the Closca has a cloth cover rather than plastic. It retails on their website for €62.For 2019 Closca introduced their new Loop model, known in the US as The Stack or The 174 Hudson Stack. The shape is a little different from the original Closca, with a forward-swept lower ring. But the concept is the same, with telescoping rings that Closca says reduce the helmet's volume by 45%. And fully extended the helmet is round and smooth. Certified to the US CPSC standard and to EN1072. Cost is €70 in Europe and $80 in the US through Priority Bicycles. Also available on Amazon as the 174 Hudson Stack Helmet.
Fend
Fend has a folding helmet with ribs that fold in from the sides in two sections to stow in the helmet.
We like the way the helmet locks open, with two tabs to lift to let it fold. But the strap junctions do not lock and are so slippy that we would not use the helmet. Width when folded is about 5 inches. The Fend One is CPSC and EN 1078 certified. Comes in white, black and "NY Yellow." Retail on their site is $120 with free shipping.
HeadKayse
HeadKayse ran a long Indiegogo campaign to develop a new soft helmet that folds, with ours actually delivered in 2020. The design is interesting, with no standard EPS foam but a flexible material they call "Enkayse." It is a multi-impact material and the manufacturer says it outperforms EPS in lesser impacts and can pass EN1078 after 300 impacts, but it seems to rebound more than EPS. The helmet is thick and feels solid and heavy. It is made of segments held together with straps that open enough to provide vents when it is worn. Folded, our sample flattens to just over 3 inches, and elongates about three inches in the fore-and-aft direction.
Despite strap fiddling we have not been able to get a secure fit that does not ride up in front. Hedkayse has a fit video up that may help, but did not help us. Pandemic distancing prevents our trying it on other heads at present.
The helmet has a nice slotted tab buckle that adjusts every time you wear it, but we found the end of the tab a little too sharp. The strap junctions hold exceptionally well. Hedkayse designed the helmet to meet the European EN1078 standard. Instead of test results the company has a YouTube video that would be simply fun and laughable if it were not so misleading about the EN1078 standard. That calls into question the 300 impacts cited above.
Overade Plixi
Overade has a folding hardshell helmet called the Plixi with a complex folding mechanism. It meets the CPSC and CEN helmet standards.
Consumer Reports rated its impact performance as Good in
their 2019 helmet ratings, but downrated it for fit and ventilation. You can see the folding action in this video. The Overade folds into a chunk instead of flattening like most folders.
Folded measurements are about 4.75" (120mm) by 8.4" (210mm) by 6.4" (106mm). There are accessories to include a visor and
rain cover. Strap junctions on our sample did not hold at all, so fitting would be difficult without sewing the straps or
using rubber bands below the fittings to prevent them from slipping. It is available on the Overade web page for €
75, on the UK market for as little as 60 Pounds and now in the US at about $100, all plus shipping.Weshine
Weshine Online is marketing a folding paper helmet that appears in the photos to be almost the same design as the Spitfire Industries Ego listed below. It is advertised as made of "cardstock." There is nothing on the WeshineOnline site about meeting any standard. Weshine Online is a Chinese company, but to sell in the US the helmet has to meet the CPSC standard. The price is lower on Amazon at $30, and $36 on the Weshine Online site, but Weshine includes shipping.
Recalled, new versions available in Europe
Morpher
Morpher folded the US company in 2020 and CPSC then issued a recall of the helmet, with instructions to just discard it with no refund or replacement. But they still sell a version of it in Europe, where the manufacturer says it passes the EN1078 standard.
Morpher began raising funds on November 1, 2013 through Indiegogo to launch a new line of folding helmets. We found that the original US helmet had fit issues, but later revisions may have been better. Morpher produced a model they certified to the CPSC standard. The US retail price was $120.
In July of 2019 Consumer Reports published a rating for the Morpher helmet of "Don't Buy: Safety Risk" after it failed their impact tests. The tests are basically identical to CPSC testing. Although Morpher said their helmet had passed in other labs, that raised a serious question about its protection. The CPSC recall announcement more than a year later answered the question, but by that time Morpher had folded their US company and was no longer in business to fund a recall. We got an email from Morpher - Folding Helmet Ltd in September 2020 saying "If you have a Morpher Flat Folding Helmet produced after April 2017, you should immediately stop using it to avoid the risk of serious injury." But there was no offer of a refund or new helmet. A version of the Morpher remained on the European market and is available on the Amazon UK site to customers outside of the US. The current website for Morpher belongs to Vigil Helmets Ltd., majority-owned by Jeff Woolf, the developer of the original Morpher, who says he is working again on a product for the US.
Others not yet delivered
Newlane
Newlane is a two piece "packable" helmet with a top half that flips over and fits into the bottom ring. They said in August 2024 that the helmet meets the European EN1078 standard and they will soon reach the market. For the US they would have to meet CPSC, of course.
Newton-Rider
Newton-Rider is promoting a new foldable helmet with an Indigogo campaign. The website says it is the "worlds thinnest bicycle helmet." The helmet is only 16mm thick (about half of a normal helmet thickness) but is said to meet the EN1078 and CPSC standards. It is multi-impact and only fits heads from 57 to 60cm. It has no vents. The company is Danish and is backed by an agency of the Danish government. The website still says deliveries will start in the first quarter of 2021, but the latest estimate is first quarter of 2025. The company has issued 64 Indegogo updates and accumulated many bitter comments about the delays. The price now on the Newton-Rider website is $140 US with availability "along Q1/25".
Park & Diamond
Park & Diamond was developing a folding (or rollup) design and was promoting it with an Indiegogo campaign that raised over $3 million. The description: "Looks and feels like a baseball cap." But the helmet had a strap and was designed to meet the CPSC standard. Advertised as weighing 8 oz. but the estimate increased to 15.5 oz. Estimated delivery was originally February 2019 but they announced that due to coronavirus delays at their first manufacturer they were forced to change manufacturers. Their timeline showed deliveries beginning in December 2020, but we have not received ours yet. This YouTube video speculates that the design was changing. The almost doubling of the original weight might indicate that. The last update said "We are making progress..." But the current Indegogo page says "This campaign is under review. It is not accepting contributions." And the update page makes it clear that the project is over, the money is gone and you are on your own to try to recover your contribution. We lost ours.
Put A LID on It
Put A LID on It has been developing a low cost folding helmet designed for shared bicycle programs, particularly the London system. In mid-2016 their site said they would launch the crowdfunding effort soon. We can't find them now.
Spitfire Industry
Spitfire Industry is developing a new Eco Helmet model made of recyclable paper in a radial honeycomb pattern. This could be an exciting new model if it can meet standards. It folds flat and is said to be very inexpensive to produce. They are intended to be readily available for shared bike system users. Although the website says "Crash Tested. Absorbs blows like traditional styrofoam." and "EcoHelmet absorbs blows from any direction as effectively as traditional polystyrene," a media report said it was not yet certified to CPSC as of August 2016. The testing shown in the company's video does not even approximate the CPSC impact test protocol, and CPSC requires testing after at submersion in water for up to 24 hours, a real challenge for paper waterproofing. EcoHelmet planned to launch early in 2017. We hope they find the right materials to make the design work. (June, 2017: Weshine is marketing what appears to be the same design--see above)
Kova
Kova had attempted to bring a folder to market but notified us in April 2021 that they were shutting down.
Bottom line
Folded or not, a helmet is another item for a pedestrian to carry unless planning in advance to use a borrowed or shared rental bicycle. That may not be a problem for backpack users, but those with purses or briefcases can't tuck a non-folding helmet inside them. We are glad to see models in the market that meet the US standard, and hope for more.
Back to the top
Back to the Home Page