Windproof, Waterproof, Seam Sealed and highly breathable our laminated innovative fabric will change the way you think about fleece. Kryptek has taken Vellus fleece and added Thinsulate Platinum XTS Insulation to create one of the worldâ??s most versatile garments. From 15 degrees to 50 degrees, you will be comfortable, dry and quiet like you never thought possible. The Vellus fleece has incredible stretch combined with a stretch lamination for the ultimate in comfort, mobility and versatility. Plus adding scent control makes this one of the best garments on the market.