The Burton AK Helium Hooded Stretch Men's Insulated Jacket is a lightweight synthetic insulator built to move with you. Stretchy, breathable fabric and low-bulk synthetic warmth make it ideal on the uptrack when it is cool or under a shell on the descent. It is the versatile, packable midlayer for active cold-weather days.

Why we like it:

The stretch is what sets it apart; a slim, insulated jacket that moves this freely works as an active layer you can climb in without overheating. It stuffs into its own pocket, so it always makes the pack.

Features and Functions:

The Helium uses a stretchy, breathable 20-denier nylon and spandex plain weave with a water-repellent coating, insulated with 40 grams of Thermacore Stretch for a strong warmth-to-weight ratio in a low-bulk design. It stuffs into its own pocket.

Fit and Sizing:

A slim fit sits close to the body and layers under a shell. True to size, cut close for active layering.

Bottom Line:

As an active insulating midlayer for touring and cold resort laps, the Helium is best at breathable, stretchy, packable warmth on the move. The layer you keep on while you climb.