Shell: 100% Nylon. Side panels and sleeve panels are 90D TNF Apex Aerobic (93% Polyester, 7% Elastane Heathered); Insulation: Synthetic ThermoBall insulation with PrimaLoft insulation; Round Thermoball clusters are placed at the back and chest to trap and retain heat for targeted warmth; Fastening: Full zip fastening; Hem: Cinch-cord hem for extra warmth and a snug fit; Cuffs: Elastic-bound cuffs for extra comfort and warmth; Pockets: Two zipped hand pockets to sides; Hood Details: Fixed, snug-fitting hood for added warmth; Collar Details: High-neck collar for increased warmth and protection; Branding: The North Face logo embroidered to front and back; Weight: 300 g; With a combination of ThermoBall insulation powered by PrimaLoft throughout, the Thermoball Hybrid Jacket will certainly keep you warm. With added stretch to the soft-shell panels, the jacket is also exceedingly comfortable.