Ventec 2-way zippered core vents with snow blocker mesh Ultra tough polyester/nylon shell with 3M Thinsulate Original Insulation (100g body/80g sleeve) Dropback design with shock cord adjustable hem 3M Scotchlite Reflective materials Wind blocking magnetic/snap front placket 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.