Burton Women's AK Helium Insulator Jacket, True Black, X-Large 100% Other Fibers Imported Waterproofing: lightweight stretch ripstop DWR Coating WARMTH: engineered with Primaloft Silver with 4Flex stretch insulation [80g body/60g upper sleeves/40g side body and underarms] Articulated fit Interior stash pockets Zippered hand warmer pockets