The Ciele VLVInsulator is designed for running but built to perform throughout mixed conditions and the variety of cold weather cardio-driven sports. Details: Recycled C0 DWR polyester outer layer and Sorino | WS wool silk insulation Recycled polyester and carbon COOLmatic | EXP™ DIAMAfleece panels COOLmatic | EXP™ airBEAM™ for elevated ventilation Zippered hand pockets and inner phone pocket Reflective detailing for night run visibility Ciele Athletics™ million miles guarantee Machine washable Weight 356 grams Designed for people who run