Proton Heavyweight Hoody W's Color:Azalea Black 4-way stretch material and flatlock

4-way stretch material and flatlock seams work together to move with you and cut out chafing when you really go for it

agile enough to run in

Pro-level protection against the elements is also available in a short-sleeve version

Self fabrication water bottle pockets

Universally flattering pilot lens shape

Proton Heavyweight Hoody W's Color:Azalea Black 4-way stretch material and flatlockCreated to offer the breathability, durability, and mobility guides and mountain professionals demand, our warmest Proton delivers air permeable thermal performance for high output missions in cold conditions. 100gsm Coreloft insulation and the Fortius Air 50 outer allow airflow that helps speed vapour transport and balance thermal comfort. 60gsm Coreloft in the sleeves and helmet compatible StormHood reduces bulk, the regular fit layers easily, and