1, Upper is made of 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, suitable for dog's swimming, walking, and also good for bandages and injured paws

2, Nonslip and soft soles, well protect dogs' paws on summer hot pavement, grass, tile, deck, boat, winter salt, ice, indoor hardwood floors and other surfaces, also provide traction for dogs' walking and running

3, Easy and quick to put on, but difficult to slip off if they fit. Closure control by a wide, elastic and adjustable strap

4, Practicable Reference Size of XS: Inner Sole Length 2.17 Inch, Inner Sole Width 1.97 Inch. Allowance Error: 0.11 - 0.20 Inch. One set of 4 boots

5, These boots are relatively flexible and roomy, so a snug fit is better. If dog's paws are in between 2 sizes and if you've chosen the larger one, you could try to use socks for dog inside the boots

Practicable Reference Size of X-Small: L 2.17" x W 1.97". Lonsuneer soft dog boots are reliable paw protectors for dogs, capable to protect paws indoor and outdoor, and also suitable for bandages. The boots are comfortable, flexible, lightweight and hand washable. Please measure across the whole paw pad to get the measure of paw width and length. These boots are relatively flexible and roomy, so a snug fit is better. If your dog's paws are in between 2 sizes and if you've chosen the larger one, you could kindly try to use socks for dog inside the boots and then the boots may stay on better. Kindly Attention: Though the soles are waterproof, the boots can't be applied in deep water or in heavy rains, because there may be water seepage through sewing needle holes or through mesh fabric.