When it comes to synthetic insulation, there are two clear industry leaders: Polartec® and Primaloft®. Both provide tons of warmth, so The North Face combined them to give you the best of the best. Polartec® Power Stretch® arms provide you with the range of motion you just can't get in other down jackets, while Primaloft® Eco insulation traps heat, even when wet. The North Face Jakson Hybrid Jacket was built for true backcountry savages with an integrated avalanche transceiver strap system to prevent your beacon's harness from chafing or riding up on long hours on the skin track.