Size 5: Paw width1.77 in, shoe length 4.33 in, grip width 3.15 in. Please measure your pet before purchasing. Place your pet's paw on a piece of paper, mark the width of the paw, including toes and nails, and refer to the size chart to choose the right size. Please Note: Only suitable for small and ultra-small pets. Adjustable Drawstring: The dog shoes for small dogs are designed with an adjustable drawstring and elasticated buckle. You can adjust the elasticity to suit your dog's size and lock it in place. It's easy to put on and take off. Non slip dog booties effectively prevent the dog's paw from falling off and provides a comfortable wearing experience for furry friends. Waterproof & Reflective Straps Design: The dog boots are made of the best waterproof polyester fabric, so they're breathable, waterproof and durable. Your dog's feet will stay dry even if they're out in the rain. And the reflective tapes on the surface of the dog booties provide enough visibility at night to keep your dog safe.