Simms’ Stone Cold Shirt is refrigerator-engineered to keep you comfortable when the fishing gets steamy. Cool Control fabric technology is arctic to the touch and absorbs and dissipates heat better than traditional fabrics. This, combined with COR3 technology, gives you sun relief in a UPF-rated shirt that effectively puts heat on hiatus. Features include: Cool Control fabric technology provides a cooler, more comfortable garment, Ideal for warm fishing environments, Fabric absorbs and dissipates heat, 2 Fly box compatible zip close chest pockets, Under collar buttons and straight hem, Off-shoulder seams for added comfort, Imported. Available in River; Sizes S-2XL.