The Platform offers a tough polyester/nylon shell with fixed Castle ColdShield quilted insulation (200g body and 150g sleeve) to keep you warm. Tough polyester/nylon shell. Fixed Castle ColdShield quilted insulation (200 g body/ 150 sleeve). Water resistant PU coated shell materials. DWR coating. Double stitched seams. 3M Scotchlite Reflective materials. Zippered internal chest pocket. Insulated, fleece lined collar. Velcro adjustable fleece-lined cuffs. Dropback design. Tether D-Ring.