Protect your feet from the elements with the Thermax II. This shoe cover provides high insulation from the cold and is very water resistant. The Thermax II offers maximum visibility, thanks to reflective accents located at the front, rear, and side.. . Cuff: Bias. Under Sole: Under opening with hook and loop for easy adjustment and reinforced rubber for durability. Opening: Side opening: Hook-and-loop fastener with safety puller for easy slip on and off. Shoe Cover Fabric: 3mm Neoprene: Isolates from cold, provides warmth - Fleece Lining. Sealed seams. Imported.