Size 1: 2.75" x 1.96" (L*W), suitable for 12-20 lbs; ideal for Poodles, Schnauzers, Pugs, West Highland Terriers, etc. Please Mainly refer to the dog's paw width in the picture Choose the right size.In your puppy's size chart. Adjustable: easy to put on and take off. The non-slip sole with reflective strips provides stability and traction to help your dog walk safely at night. Waterproof: The upper is made of microfiber, which easily protects against rain and artificial splashes. But the shoes are not completely waterproof and cannot be used in deep water or sand, because the stitching holesmay ooze water or fine sand. COMFORT: Flexible and waterproof, the boot can be used indoors or outdoors, warm and cold in wet and dry conditions. Protects against sharp thorns and hot stones. Effectively protect dog pawsheat, stones, glass, etc. Soft paws of winter snow, ice, salt. Size reference: Size 1: 2.75"x 1.96" (L*W) for 12-20 lbs; Ideal for poodles; Schnauzers; Pugs