Giro Seam Helmet

Priced: $89.99 - $160.00 Rated:   - 5 stars out of 5 by 9 reviews.
Giro Seam Helmet
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Color: Matte Red Motherboard
Available Colors:
Al's Sports $89.99
43% off
Regularly: $159.99
Christy Sports (2012)
40% off
Regularly: $160.00
Christy Sports (2013)
30% off
Regularly: $160.00 $127.99
20% off
Regularly: $160.00 (2014) $159.95 $159.95 $159.95
Berg's Ski Shop $159.95 (2014) $159.95 $160.00
PeterGlenn $160.00
Christy Sports $160.00
Evo $160.00
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Giro Seam Helmet -

The Giro Seam helmet features the wonderful Thermostat vent system, Giro's Stack Vent, and a feather light weight. What does all of this mean? It will keep your temp under control, your goggles clear, and your comfort level at an all time high. Finish it off with the best fit system ever made for a snow helmet and you are ready for a full day on the mountain. The In Form Fit System makes it easy to dial in a custom fit in seconds even with your gloves on. An ergo-friendly dial at the base of the helmet provides up to 4cm of adjustment and enhanced stability while the vertical tuning feature accommodates different goggles and head shapes for a custom fit, free of goggle gap. Thermostat ventilation control allows you to custom tune airflow instantly with a simple, low profile control button on the outside of the helmet. No other system is faster or easier to adjust, and nothing is more effective at keeping you comfortable. Giro's Stack Vent was developed based on research showing the majority of the warm air that can cause fogging exhausts from the center top vent of the goggle. Aligning the Stack Vent in the helmet with the center vent of your goggles helps to keep them clear and fog free while maintaining total helmet and goggle integration. When it comes to protecting your head, pick up the Giro Seam helmet today.


  • 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
  • In-form fit system creates a perfect fit for a variety of head shapes


  • In-mold construction fuses a tough polycarbonate shell with the cushioning foam, saving weight and increasing cooling efficiency
  • X-Static lining has silver fibers woven into it that fight odors and help regulate heat
  • X-static padding has silver fibers woven in to keep helmet odor in check


  • Thermostat control gives you one-button control over the vents to respond to changing conditions
  • Super cool vents pull cool, fresh air into the helmet while pushing out heat and stale air
  • 12 Super Cool vents with Thermostat control
  • Stack vent in helmet aligns with center vent on your goggles to keep the clear and fog-free


  • Thermostat control allows you to regulate airflow to keep you comfortable


  • In-mold design fuses the outer shell with the EPS liner for a lighter, more durable design
  • Compatible with TuneUps audio systems (sold separately)
  • Compatible with all after market TuneUps systems

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.

Christy Sports (2013)

Giro Seam Helmet – Men’s: The innovative Stack Vent combines with our Thermostat vent system to disperse excess heat for superior comfort in a variety of situations and conditions. Add to that the best fit ever made, and the seam becomes the perfect weapon for an all-mountain attack.

4 In Form™ sizes.
Compatible with all after market.
TuneUps systems.
In-mold construction.
X-Static anti bacterial padding.
12 Super Cool vents with.
Thermostat control.
Stack Vent.
Compliance: ASTM F2040 / CE EN1077.
S (52 – 55.5cm)
M (55.5 – 59cm)
L (59 – 62.5cm)
XL (62.5 – 65cm)
XL size offered in limited colors.

Sale and previous season's helmets may not include original packaging. 
The helmets are authentic and unused, but with limited storage (in some of our stores) packaging has been discarded.

The Giro Seam Helmet is Giro's classic, bomber freeride lid for the serious all mountain athlete. Super solid In-Mold construction and a one-hand adjustable Thermostat Control system make the Seam the go-to helmet for more mountain professionals than you can count.


The Giro Seam Helmet is a lightweight helmet that provides great protection and plenty of air flow. The X-static padding offers superior odor protection thanks to silver fibers woven into the liner. The thermostat control allows you to control the venting, and the Seam includes specialized vents that direct air where you need it: The Super Cool vents allow cool air to enter the helmet and the Stack vent funnels air into the goggle to assist with fog-free vision.

The Seam by Giro offers Innovative Stack Ventilation combines with Giro's Thermostat Control vent system to disperse excess heat for superior comfort in a variety of situations and conditions. Add to that the best fit ever made, and the Seam becomes the perfect weapon for an all-mountain onslaught. Top 25 Category Product
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Average Price History: Price History
Review RatingNumber of Reviews
Audio:Audio Compatible
Category:Half Shell
Certification:ASTM 2040 / CE EN1077
Certifications:ASTM F2040 / CE EN1077
Compatibility:Compatible with all after market tuneups systems.
Custom Fit Adjustment:Yes
Helmet Features:Adjustable Fit, Audio Compatible, Goggle Compatible, Vents
In Form Sizes:S (52 – 55.5cm), M (55.5 – 59cm), L (59 – 62.5cm)
Material:Poly-carbonate Shell
Model #:2034402
Shell Construction:In Mold
Size S:52–55.5cm / M
Special Features:Super Fit Engineered
Weight:2 lb 2 oz / 975 g
Year Round Capable:No
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Giro Seam Helmet Reviews:


actually sized down to a medium and I have a neandrothal oblong head. Measure 23.2". I own a Giro Nine-Ten in a Large. It fits where a medium does not. The Smith Vantage and Giro Montane I need a large but they look like bowling balls..big. Never liked wearing helmets much but the Seam is comfortable, light and stylish. Have so many cool wool hats that I have had made at Wapiti Woolies over the years. Looks like they will be dedicated to apres ski. I bought the Black Boneyard model and pair it with the Smith I/O in Republic Red. Wife likes the combo and that I am actually wearing a helmet after all these years.

skidawg at on 11/23/2012

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).

Will S. at on 03/01/2013

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!

ross1237217 at on 02/14/2013

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.

Chris Huntley at on 06/11/2013

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.

John Dobrott at on 10/16/2013

great helmet with one exception

I have been skiing for 40 years and this is my first helmet. I was always leary of comfort and heat build up along with perspiration. With the Giro Seam neither has been a problem. A very pleasant surprise. My only complaint is the amount of wind noise caused by the earflaps.
One Earred Dog at on 01/01/2013

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%.

Todd Kehoe at on 09/21/2013

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

glk5872047 at on 01/16/2013

Fits really well and is very comfortable and warm. The ventilation also works well.

jyoo1215 at on 01/04/2013