Ultra tough polyester/nylon shell with 3M™ Thinsulate™ Original™ Insulation (100g body/80g sleeve) and a removable liner (100g body/80g sleeve). Overall insulation weight combined (200g body/160g sleeve). Critical seams sealed and Comfort-Flow™ polyester mesh lining. 5,000mm/5,000g/m² Ven-Tex® 2.0 windproof, resistant, breathable coated shell materials and DWR (durable water resistant) outer surface treatment repels moisture.