Lifeful&reg; Summer Dog Simple Soft Sole Nonslip Mesh Boots, Breathable, Flexible and Cool, for Dog Daily Walks or Stroll, Set of 4, Black Color, Size M, L, XL, XXL Upper is made of double-layer breathable mesh fabric, firmly hemmed by soft durable cloth around, with flexible cuffs at the top, capable to keep debris out, and make paws comfortable, cool and dry. Nonslip, water-proof, and flexible faux-leather soles, well provide traction and protect paws in daily environment. Very easy and quick to put on, but difficult to slip off. Closure control by a wide and adjustable Velcro strap, firmly fastens around ankle. Lightweight, convenient and hand washable, practical for large dogs in daily simple wear during spring, summer and early fall. Size XXL: Inner Length 4.7", Inner Width 3.5", Inner Length can be extended because of very soft sole. One set of 4 boots, comes with Lifeful unique hang-tag.