Get the ultimate in synthetic insulation from The North FaceR with the Men's ThermoBallTM Jacket. Highly compressible and extremely warm, this North Face jacket is the perfect cold weather companion. Featuring and men's active fit and a hem cinch cord to seal in heat and fits close to the body to provide a wide range of movement. Features: Active fit 15D nylon ripstop with ThermoBallTM insulation TherBallTM insulation: 9.5 gft throughout Exposed molded tooth center front zip Secure zip covered hand pockets Stowable in pocket Internal elastic cuff Hem cinch cord Avg. Weight: 360 g 12.7 oz Center back: 27.5 Fabric: shell: 15D 33 gm 100% nylon insulation: PrimaLoftR ThermoBallTM synthetic insulation Technology: ThermoBallTM: Developed in partnership with PrimaLoft, Inc., ThermoBallTM is a revolution in insulation technology. Unlike traditional continuous filament synthetic insulations, the small, round PrimaLoftR synthetic fiber clusters closely mimic down clusters, trapping heat within small air pockets to retain warmth. Independent coo testing by Kansas State University has shown that ThermoBallTM has warmth equivalent to 600 fill goose down. As a result, ThermoBallTM can offer the light weight, loft, warmth and compressibility of down with the wet weather insulating performance of synthetic insulation.