The Launch is an ultra tough, polyester/nylon 3M™ Thinsulate™ Extra Warmth insulated shell with a removable 3M™ Thinsulate™ Extra Warmth Insulation liner (for overall combined insulation of 210g body and 160 g sleeve) to keep you warm. The Launch also features Ven-Tex® 1.0 windproof, waterproof, breathable coated shell materials.