In our overzealousness to protect dogs from the harshest winter elements, we designed the Zack & Zoey ThermaPet Neoprene Boots to feature special warming technology, strong traction treads, and durable, lightweight soles capable of withstanding temperatures as low as -4 F. Neoprene dog boots with ThermaPet technology offer protection from the harshest winter elements Durable, lightweight rubber soles with strong traction treads for slippery outdoor surfaces Sole can withstand temperatures as low as -4 F to as high as 176 F Outer neoprene shell acts as an insulating layer while the inner MPET layer reflects back the dogs own heat into the boot for extra warmth-great for all weather conditions Front zipper and single-strap, reflective hook and loop fastening for an easy, secure fit Material: 100% Polyester Neoprene; Vulcanized Rubber Sole; MPET Colors: Red, Blue Sizes: XX-Small measures 2L x 1W x 3H X-Small measures 2L x 1W x 3H Small measures 2L x 2W x 3H Medium measures 3L x 2W x 4H Large measures 3L x 2W x 4H X-Large measures 3L x 3W x 5H Care: Machine wash in cold water on gentle cycle. Line dry.