Altra Men's Olympus 275 used Huge back zipper access to

Huge back zipper access to main compartment

- pick tapered to 3 mm at the end for good penetration in ice

this hat is for you

Optimized for use 14°F (-10°C) and warmer

but slightly-lower

Altra Men's Olympus 275 used Huge back zipper access to### Altra Says ### We went all in on tech so you can go all out on the trail. Its got durability, protection, and lightweight comfort from top to bottom. We partnered with MATRYX to design a one piece woven upper thats lightweight and protective, for high performance and high mileage. Protect your feet from debris with a built in scree sleeve. A zonal fit lock is designed to deliver a confident, secure fit while a TPEE sock liner helps improve