This post may contain affiliate links.

Giro Timberwolf Cold Weather Bike Helmet Review

The Giro Timberwolf Cold Weather Bike Helmet in an insulated winter biking helmet that's goggle compatible and has adjustable vents for heat regulation.
The Giro Timberwolf Cold Weather Bike Helmet in an insulated winter biking helmet that’s goggle compatible and has adjustable vents for heat regulation.

Winter fat biking is a very aerobic sport and I don’t just mean the huffing and puffing part. It’s not that unusual to find yourself flying through the air and into a snowbank when your front wheel gets stuck in a rut or you hit a patch of ice and the back wheel slides out from under you.

Specs at a Glance

While wearing a bike helmet is always recommended for head protection, it pays to get an insulated winter helmet like the Giro Timberwolf Cold Weather Bike Helmet for winter riding. While there’s less danger from cars when riding on snow-covered backcountry roads, snow mobiles routes, or XC trails, hitting a tree or taking a header is still an ever present danger.

The Giro Timberwolf has insulated ear pads that can be removed in warmer temperatures
The Giro Timberwolf has insulated ear pads that can be removed in warmer temperatures

The Giro Timberwold is a wrap-around bike helmet with more rear and side protection than you find on many bike helmets designed for warm weather use. The Timberwolf comes with a removable liner that covers your skull and insulated ear pads, although both are removable. This gives you a number of layering options. For example, you can take all or part of the insulation out if you wear a full balaclava w/face mask or keep them in if you cover your face with a buff, bandana, or half mask for wind protection.

The Rear Goggle Clip prevents goggles from slipping and keeps them level
The Rear Goggle Clip prevents goggles from slipping and keeps them level

The Timberwolf also comes with a rear clip to hold your goggles in place so they don’t slide off when you’re riding. These are a necessity for winter riding so your eye lashes don’t freeze shut. There’s plenty of space to wear goggles under your brow and the rear clip helps keep them level. For example, I wear oversized OTG (Over the Glasses) goggles without any issues.

There’s also a slider on the top of the helmet (you can see it in the photo above) which opens and closes air vents in the top of the helmet. These are great if you start to overheat. Depending on the temperature outside, I usually start with them closed and open them if I get too hot when riding. When worn with it’s liner and ear insulation, the Timberwolf gets too warm to wear much above 40 degrees, but it’s kept me toasty down into the teens when worn with goggles, a face mask, and neck gaiter. Much colder than that and I don’t ride.

The internal liner is held in place with velcro. It's removable. as are the ear pads
The internal liner is held in place with velcro. It’s removable. as are the ear pads.

There’s a dial at the rear of the helmet that lets you fine tune the fit around the circumference of your head. I’ve found that the Timberwolf runs a bit small and that it pays to size up if you fall between sizes, especially if you plan to wear your own head insulation like a skull cap or combination balaclava facemask. There’s a standard padded and adjustable chin strap that provides additional flexibility in getting a good three-dimensional fit.

I typically wear the Timberwolf with goggles and a face mask or buff/neck gaiter, and don’t bother taking the helmet’s insulation out because the helmet is so comfortable and warm to wear when it’s nasty out. This being my first winter biking season, I tried to extend the season of my regular warm weather helmet as far as I could but it was awkward trying to zero in on a general purpose insulation, goggle, and face mask combination that worked together and didn’t have to be adjusted constantly. Switching to the Giro Timberwolf Cold Weather Bike Helmet gave me one less thing to worry about and makes it easier to get out, knowing that I’ll be warm enough, whatever the weather throws at me.

Disclosure: The author purchased this product with is own funds.

SectionHiker is reader-supported. We only make money if you purchase a product through our affiliate links. Help us continue to test and write unsponsored and independent gear reviews, beginner FAQs, and free hiking guides.


  1. That looks very much like the helmet Giro sells as a skiing helmet, the Giro Nine.
    At least for skiing, I’ve found it to be a very good helmet (it has done a good job of protecting my noggin’ when I’ve crashed).

    • From what I gather, they differ in the impact standards (direction of impact) they meet so it’s best not to use the same helmet for the two sports.

      • I wonder if they actually differ or if they were just tested differently.

        Bicycle helmets are tested by placing a weighted head in the helmet and dropping it from a 2m height onto a flat anvil. The idea is that in a bicycle accident, the forward velocity doesn’t really matter, your head is most likely to impact the ground and so the only velocity that matters from the acceleration due to gravity.

        Ski helmets are dropped from a 1.5m height onto a flat anvil. Ski helmets are then dropped from a height of 0.75m onto a pointed cone to test penetration resistance.

        If they actually are different helmets, they might have had to improve the shock absorption to satisfy the higher 2m droptest of bicycle helmets, but then they might have made the shell thinner because they don’t have to survive a penetration test.

  2. Anywone: I need this sort of helmet. I’m an adult, but I don’t have a large head. I noted that someone mentioned that these helmets tend to be smallish. Is there somewhere in Toronto where these are sold? It’s just not something I can order online. I have to try it on, obviously. Thanks.

  3. I’m using the Giro 9 ski helmet for e biking in the cold. It’s vented for cooling but SUPER warm in the wind.

  4. I’ve been doing research on helmets lately, not for ice climbing, but for tornado protection. Recently, someone said it was a good idea to wear one during a tornado. That made sense to me since we have them in Indiana and since the weather gets crazier and crazier. This winter has been disturbingly calm here, and I know that Mother Nature is not going to take that lying down. So, the 1Storm Motorcycle Street Bike Modular Flip Up Dual Visor Full Face Helmet HB89 is the one for me. Granted, it’s not likely I’ll need the sun visor but who knows where or what I’ll be doing a few years from now! Yesterday I hiked 7 miles – all the way to the new section of the B & O trail which isn’t open to the public yet but I did see someone walk around the barricade to use it! That makes 17.29 miles this week, a record for me and, weather permitting, I’ll be breaking that record too when I go tomorrow. Half the credit goes to Darn Tough socks extra cushion, and half to your newsletter, Phil. Thank you! BTW, I put the Darn Tough Decal on the back of my backpack. LOL!

Leave a Reply

Your email address will not be published. Required fields are marked *

Solve *