Free 2-Day Shipping on Orders Over $50* Up to 25% Off Marmot – Save on Clothing and Gear


No more excuses.

Nobody's ever accused you of being a hothead, and they're not going to start now, not when you're wearing the Giro Seam Helmet. Twelve Super-Cool vents that can be adjusted from a single Thermostat control keep things from getting uncomfortably hot and sweaty under the Seam's polycarbonate shell, even on warm days. Add to that Giro's fine-tuned Super Fit engineering, not to mention its top-flight impact protection, and you have just run out of excuses to not wear a helmet.

  • In-mold construction fuses a tough polycarbonate shell with the cushioning foam, saving weight and increasing cooling efficiency
  • In-Form Fit system lets you fine-tune the fit with an ergonomic dial, even with gloves on; vertical tuning features accommodates different head and goggle shapes
  • Super cool vents pull cool, fresh air into the helmet while pushing out heat and stale air
  • Stack vent in helmet aligns with center vent on your goggles to keep the clear and fog-free
  • Thermostat control gives you one-button control over the vents to respond to changing conditions
  • X-Static lining has silver fibers woven into it that fight odors and help regulate heat
  • Compatible with TuneUps audio systems (sold separately)

Share your thoughts



No file chosen

Rather attach a photo from another website?

Rather attach a photo from your computer?

    Add a:
  • Share a photo
  • Share a video


Only jpg, jpeg, png, gif or bmp files please.

Now review from the App.Download

Here's what others have to say...


Great helmet

  • Familiarity:I've used it several times

I've owned the Giro Montane last season and I loved it. Then saw this one in blue and loved it even more. Super comfortable, adjusts well to my head, adjusting knob and vent knob are easy to control even with gloves on. Drop-ins fit easily into the ear-pads and the sound is great as always. It is very light and my googles fit snug. I love it, and can't wait for the season to start so I can use it. Better than any beanie I ever owned.


Comfiest helmet I've found

  • Familiarity:I've put it through the wringer

I'm on my second Seam helmet after having my first one for a solid four seasons. Between its age and the number of impacts I've gone through with it, I decided it was time for a refresh (remember, you probably don't want to wear a helmet until it disintegrates from old age....). My first Seam served me really well and I have absolutely no complaints about the durability or longevity that I had in my old helmet. I did some shopping around to see if I liked anything else better and ultimately came back to the Seam for another round.

The helmet is light and comfy and has a good set of vents. Probably not the absolute highest airflow out there, but I like the positioning of the vents and the ability to close them easily with the push of a slider on the top of the helmet. The front vent is also nice in that it helps vent hot air off your goggles and keeps them from fogging up.

I have these paired with Oakley Airbrake googles and it's a great fit. Almost looks like the helmet and goggles were designed for each other.

Ultimately the biggest deciding factor for me was fit. I've come to realize that I generally have a "Giro-shaped" head and helmets from Smith and POC (among others) generally just don't fit me as well. I've found that, as a general rule, Giro helmets seem to have a longer / more oval fit whereas Smith and POC both have a rounder shape that isn't as comfortable or secure on me. Fortunately, Giro helmets usually fit me like a glove.


Not for me.

  • Familiarity:I've used it several times

I hate this helmet. It's lightweight, and not in a good way. Feels cheap and the plastic top started peeling away from the foam in the front. I'm right between a small/medium, and I opted for the medium but the ear flaps are ridiculously wide and barely even touch my ears, so I have to wear a hat underneath or else I freeze. The only good thing is that I found the vents easy to open/close while wearing mittens.


Great helmet for a great price.

  • Familiarity:I've used it several times

Helmet has been great for the few times I have used it. It is nice on the warm mountain days where you can open up the vents and feel some airflow. On the colder days it was just as great as I closed the vents and kept my head much warmer than the use of beanies. Feels great for all day skiing/snowboarding.


Great helmet!

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

Excellent helmet. Snug fit, and very warm.


Perfect Lid!

  • Familiarity:I've put it through the wringer

The Seam is by far the most comfortable helmet I have ever owned. Everything from the plush chin strap to the micro-adjustable fit system ensure that the fit is snug yet comfortable enough to ski all day without any hotspots. The thermostat control is super convenient, allowing for on-the-fly adjustment even while wearing mittens or gloves. The helmet has enough space for a thin beanie underneath, allowing me to ski in some seriously frigid weather. The ear pads are removable, ensuring you can keep your noggin cool on those warm spring runs. The brim is enough to keep some of the sun out of your eyes, yet still allows you to rest your goggles without having them flop off the back. Stack vent keeps your goggles breathing nicely, and the light weight of the helmet itself is nice on those all day journeys.

Overall, a great product... can't ask for much more when it comes to a helmet.


Comfortable and stylish

  • Familiarity:I've used it several times

I love this helmet. The Giro Tune-ups fit perfectly in the ear-slots. It is extremely comfortable and I am able to adjust the vents throughout the day depending on the temperature. I thought I wouldn't like wearing a helmet but the Seam has changed my mind, it is an excellent safety addition to my winter wardrobe.


Nice helmet... but it pinched my ears.

  • Familiarity:I've put it through the wringer

The Giro Seam helmet is well made, the adjustment works GREAT, and the vents worked OK... slide action on lever was not very smooth, they froze open or closed few times, and for some reason one if the vents never closed 100%, but I never noticed the tiny opening on one vent... I give the vents a B+.

No major complaints with the function and durability of the helmet.

It is the fit I have issue with- The darned thing pinched in on the top of my ears! I was right in the middle of the M and did not have it adjusted all the way open. So the helmet was not too small for me, but the ear flaps hurt. They are plastic reinforced and they aggressively angle in- I suppose to hug your ears tight and keep you warm. They were not noticeably uncomfortable when I first put the helmet on, just snug, but everyday after a few hours my ears started hurting. I did some mods (removing foam and a bit of plastic ) which helped but didn't fix the issue .

After a season of trying to make it work, I got rid of the helmet.

Conclusion- Good helmet if it fits you. Probably deserves 4 stars, but I'm giving it 3 so people can see a less then stellar review.


Very solid, comfortable helmet

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

My last helmet was a pain because of its weight, but the Seam is super light; I forgot I was wearing it within minutes. I love the sealable venting--there's lots of it--so you're comfortable in a variety of conditions. Very good looking as well, with a small brim. Most of all though, the click-adjustable sizing is a dream. Helmet is easy to fit firmly without being tight, and so easy to adjust you can do it while boarding. Nothing but praise here.


Seamless fit, Mom Approved

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

I bought this as a gift for my mother. She has always struggled to find a good fit between her goggles and helmet, but finally she bought some Giro goggles and they fit seamlessly with the Seam, what irony, right?! Her other favorite feature is the ventilation, she often gets a little hot headed (pun intended), but has no complaints about keeping cool and comfy in the Seam!

Is this helmet unisex and are the ear pads...

Is this helmet unisex and are the ear pads removeable?


You'll love it

  • Gender:Male

This is by far the most comfortable ski helmet that I've owned. I would recommend it to anyone, it's lightweight and comfy. The vent controls and the adjustment wheel work well and are easy to use with gloves on. The helmets brim feature matches up pretty well with any goggle, and its pretty warm. I run kinda hot but I don't have to use anything but the helmet unless it gets into the teens.

You'll love it


  • Familiarity:I've put it through the wringer

I got this helmet free brand new, but I still enjoy it & have no complaints. Giro makes good stuff, you can size it fairly well. Don't have a big gaper/beater/joey gap with the Smith I/O goggles I use, if you use a Buff headband underneath you fix that problem 100%.

Put a goat on it

Put a goat on it

bc goat, goggle retention strap, and In-Form Fit dial, in descending order.


Protect Your Dome

  • Gender:Male
  • Familiarity:I've put it through the wringer

excellent lid.pair it with some giro gogglesfor a solid fit that keeps the cold out. vent on the brim helps vent goggles. and the single control for all the vents is nicer than having to adjust both side individually. the padding on the chin strap is a little weird but you don't really notice it. second best of all (most important is your brain), no stank!

i still take it off when hiking or skinning, but i run anyway.


Bright, light, and comfortable

    I bought this for my Dad, but I ended up wearing it a few times too. My wife also used one for a few years. We got the red color and it definitely stands out on the slopes. It's easy to spot among the crowds at the resort. It's also quite comfortable. I have a roundish head and this fit very well once I used the adjustment.

    Also, my wife hit her head quite hard last year which left a big dent in the helmet, but she was fine. So seems like it works for protection too (which is why we have it).


    Giro Seam Helmet

      After owning a few snow helmets i've found the Giro's best of all. My last one was a MX G10 Which i really liked the MX style but a pain when lifting goggles up because of the peak. The seam combats this problem with having just enough of a peak to do it's job and be stylish. All the other features comfort/ adjustability second to none which i would only expect from one of these lids. 5 star from me!


      Great Lid

        Key Features: Comfortable fit, Stack Vent is great for the goggles, and the Thermostat control is easier to use than previous versions.