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Item # GIR0406 Past Season Colors

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  • Matte Lime/Mountain Division, S ($39.99)
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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

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

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.

Reviews & Community


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great helmet

  • Familiarity: I've used it several times

I wouldn't buy a helmet just buy price alone but the price on these was excellent. I bought is because Giro make a great helmet and wanted a nice helmet as a gift for a family member and have always loved the Giro products. Fit was good and true to size. Retention system is not quite as good as there top helmets but not many people would really appreciate what is on a really expensive helmet. This will be great for most people.

Simply the best

  • Familiarity: I've used it several times

Very pleased with the fit of this helmet. The ventilation of this helmet is great. I've used it a handful of times and the helmet seems pretty durable. If you're in the market for a new helmet, id recommend this one it fits great, durable and looks good.

Awesome Helmet!

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

I chose the blue and yellow one as I've always liked that kind of style. Coverage seems good, especially around the back of the head. Hopefully I don't have to test it any time too soon. It loses a star because the mechanism on the back is slightly uncomfortable at the tip of the padding towards the top-back portion of my head. However, I am very pleased with this purchase.


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

I gave this helmet to my boyfriend... and I've thought about stealing it from him (based on looks alone.) The design of this helmet is really nice but he also says the weight and ventilation are perfect for trail riding.


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

Grabbed this for a friend, but here's his feedback: "I bought the Giro Feature helmet in a size medium. I have a small head, but it fits well. Super comfortable helmet at a price range you CANNOT beat for anything else this stylish with full lower head/neck protection. It's fairly lightweight and is probably not the best helmet if you are super aggressive and/or fall on your head a lot. I have not fallen on my head yet (this season) will report back when I do."

Great helmet! Durability is iffy.

    Great helmet! The features are awesome! I love the adjustment. I love the style, sleek and smooth, although after just one spill it broke!:( maybe just a lemon but, I have had the helmet before I might go with the mips next time.

    Avg. ride time: 7m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Bought it for a friend

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

    But he loves the fit and quality. He wants the world to know he highly recommends it.

    Solid helmet for the price

    • Familiarity: I've put it through the wringer

    It has a great fit and extremely comfortable not mention a great looking brain saver. It holds up well to constant use. I've had mine for almost 4 years.

    Good helmet for a very good price

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

    The helmet fits good and seems durable after a few uses. The helmet does seem to run a little larger than my other Giros. Also the "glowing red" is much closer to blaze orange.

    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.

    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.

      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

      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!

      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.

      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).

      Looks great, BUT...

      • 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.

      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.