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Item # GIR0406

Progressive trail protection for today's all-out riding.

With a little more coverage than traditional helmets, the Giro Feature Helmet offers the protection needed for truly progressive off-road biking. Large vents aid with low-speed cooling on the climb, while the In Form fit system features a one-hand fit and stability adjustment. The in-mold polycarbonate shell and EPS foam liner give you safety-certified protection for your head without excess weight or bulk. Super Fit engineering delivers a custom-like fit for comfort and security. The adjustable moto-style visor keeps the low-sitting sun or rain out of your eyes, and the featherweight webbing with Slimline buckle keeps you nice and streamlined, so you can focus on more important things, like the trail ahead.

  • In-mold polycarbonate shell 
  • EPS foam liner 
  • In Form one-handed fit system 
  • Super Fit engineering 
  • 12 vents with internal channeling 
  • Featherweight webbing with Slimline buckle 
  • Adjustable moto-style visor 

  • Extra coverage compared to regular helmets
  • Twelve large vents
  • In Form one-handed fit system
  • Adjustable visor

Tech Specs

Shell Material:
in-mold polycarbonate
Impact Foam:
EPS (foam)
12 internal channels
Fit Adjustment:
In Form
Recommended Use:
mountain biking
Manufacturer Warranty:
1 year

Size chart


Adult Cycling Helmets
 SS/MMM/LLXLAdult UniversalWomen's Universal
Head Circumference 20 - 21.75in
(51 - 55cm)
20 - 22.5in
(51 - 57cm)
21.75 - 23.25in
(55 - 59cm)
21.75 - 24in
(55 - 61cm)
23.25 - 24.75in
(59 - 63cm)
24 - 25.55in
(61 - 65cm)
21.25 - 24in
(54 - 61cm)
19.75 - 22.5in
(50 - 57cm)
Head Circumference 20 - 20.75in
(51 - 53cm)
21.25 - 22in
(54 - 56cm)
22.5 - 23.25in
(57 - 59cm)
23.5 - 24.25in
(60 - 62cm)
How to Measure:
For best results, use a tape measure to measure around your head where your hat would fit comfortably.

Community & Reviews

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Giro Feature Helmet

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Here's what others have to say...

4 5

Great price, good helmet

  • Familiarity: I've used it once or twice and have initial impressions

Got it in matte gray. Helmet arrived quickly and no one came close to the price backcountry offered. Outer shell is molded to the foam so you get a nice solid but light feel. Visor had about an inch of adjustment up and down. Ventilation is ok, but on the last hot day ride I took, I definitely started cooking under it. Sizing was pretty spot on and the adjusting dial really keeps it snug on your head. Straps feel really good. My only gripe would be that I wish there was a little more padding towards the front of the helmet. I've tried to adjust the padding but I can still easily feel the hard foam against my head and that can be uncomfortable at times.

4 5

Great lid

Fit is spot on, comfortable to wear on long rides. Favorite feature is the chin strap lays nice and flat on the side. So may helmets get this wrong. Color is ok, looked a little darker in pictures.

4 5

Good XC Helmet

  • Familiarity: I've used it several times

I picked this helmet up early this summer to replace my old road helmet. I like the construction, after several uses I'm not seeing any peeling from the plastic edge, or foam deterioration. It's pretty well ventilated; I rode most of the summer, and while a cool year, I didn't have any problems overheating. Fit wise it's one of the smaller profile

Good XC Helmet
4 5

Awesome Helmet

  • Familiarity: I've used it several times

This helmet is super lightweight, with decent ventilation. I measured out to a medium on the sizing chart, and it fits true to size. It's comfortable, with no pressure points. Definitely a quality, inexpensive option!

5 5

Great Helmet

  • Gender: Male
  • Familiarity: I've used it several times

Im really happy with this guy!!! very light, I feel my head safe!!!
Kinda poor ventilation but no big deal... Love it!!

Great Helmet
3 5

Very Uncomfortable on My Head

  • Familiarity: I returned this product before using it

Well made considering the price. Designed well for protection. Unfortunately, painful on my head. Did not fit my head shape and caused painful pressure points, especially one in top back. This could be due to a manufacturing defect in that area. Have not had this problem with any other helmet.

4 5

Nice, but too round.

  • Familiarity: I returned this product before using it

I got one for my son and he liked it, so I ordered myself one. Well... I've got a really narrow head, and this thing is REALLY round. It's either going to need a lot of extra pads on the sides (which it doesn't come with) or I will return it (which is a breeze with Backcountry).

3 5

Looks great, BUT...

  • Gender: Male
  • Familiarity: I returned this product before using it

I read and re-read all the reviews from backcountry, MTBR, Pinkbike, Dirt, Amazon...Everything about it, fits what I wanted. I really wanted to use this lid.

I measure right at 56mm, which according to Giro, stats I am Medium. I ordered one up and tracked it all the way to my doorstep. I was so stoked to open it up and get riding! To my dismay, it felt a bit loose no matter how much I tinkered with it. I knew without a doubt that would not cut it out on a trail.

backcountry was awesome in getting the thing sent back and thus, I ordered a Small.

Again, I could not wait to get it out and ride!

Nevertheless...the Small sat way to high on my head and I felt to much pressure on my temples. So, I had to send this one back too.

Bummer for me, I really wanted to use this helmet. Hope the Troy Lee A-1 fits better. I had to give it 3 stars based just on the fitment. I'm sure I could have made the Medium work, but I did not want to chance it with my brain inside.

5 5

Great purchase

  • Familiarity: I gave it as a gift but have feedback to share

We ordered the S for our 12 yr old son and he loves it - the fit and the look. The red is really cool and he is very happy with this helmet.

4 5

Great fit for kids

I got a small for each of my kids and it fits each of them perfectly. The fit system on the small has a wide size range and adjusts enough to fit my 4, 6 and 8 year old.

Avg. ride time: 26m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.
5 5

Great Helmet

  • Familiarity: I've put it through the wringer

For the price, this is a great mountain bike helmet. I initially got it as a short term replacement for a cracked helmet and I ended up using it much longer than anticipated. It fits well, covers the back of the head well, and is pretty light weight. Highly recommended.

4 5

Very comfortable, good looking helmet

  • Familiarity: I've used it several times

I purchased a new helmet because my old one kept slipping forward no matter how much I tightened it. I've only been able to use this new one on a couple of rides, but so far so good. It is very comfortable and does not slip down to block my vision. They white helmet has a red chin strap, which is good looking (and will probably stay cleaner that a white one). I have long hair and, as with any helmet I've used so far, my hair gets stuck against the pads inside, which is annoying when I remove the helmet but unavoidable I assume. Otherwise, no complaints!

Great Fit, Great Profile

Sick of bike helmets that feel perched and make your head look like a mushroom? Well this has a much sleeker profile and great protection for the back of the head. It does look more like a snow sports helmet, but that works just fine for me.

Great Fit, Great Profile
4 5

Great Helmet

  • Familiarity: I've put it through the wringer

I really like the feature helmet. I took a good crash on one and replaced it for another. I also think it is one of the better looking helmets available, but not the best venting.

2 5

Great helmet ... BUT

  • Familiarity: I've put it through the wringer

This is helmet is light weight, fits real well and is very comfortable. BUT - the chin strap buckle is so weak that when I yawned it popped open. I find it takes very little force to open the buckle. I am afraid that if I go down, the slightest amount of force will pop the buckle and then my head. If that buckle was not so weak, I'd give it a five.

5 5

Fantastic trail helmet

  • Familiarity: I've put it through the wringer

I arrived at this helmet after toasting a POC and being short on cash...I thought this was more value-oriented, but I was very impressed. Overall it feel lighter on your head, and less bulky, while offering the same or similar coverage, especially on the back of your head. I have always thought Giro had great fit, and that hasn't changed. The strap setup is very light and simple, with no adjustabilty other than length...which is ideal, as it sits closer and more comfortably around your ears. Ventilation is surprisingly good despite the smaller vents. Moto-style adjustable visor is a clutch feature too.

4 5

Great Value All Mountain Lid

the feature provides the same great coverage as helmets that cost twice as much. it looks good, easily and securely adjusts, and has a good sized visor that i really appreaciate on sunset rides. while i haven't tried on POC's or Bell's offerings, i am reasonably sure that this helmet doesn't vent as well as others, i usually strap it to my bag on long climbs, then wear it on the way down. on cross country rides, my head gets toasty. the helmet has a couple issue which i have included pictures of below. in general, i think it's a good helmet that provides great coverage. for more money, you can get better ventilation and improved safety features, but on a budget, this is a great choice.