QUMY Dog Shoes for Large Dog, Medium Dogs Boots & Paw Protectors for Winter Snowy Day, Summer Hot Pavement, Waterproof in Rainy Weather, Outdoor Walking, Indoor Hardfloors Anti Slip Sole Black Size 3Please be sure to measure the width of your dog's paws carefully, it is key to choosing the correct size for your dog, weight can only be used as an additional reference; Size 1: 1. 7''x2. 2''(W*L) for 12 23 lbs; size 2: 1. 8''x2. 4''(W*L) for 18 27 lbs; size 3: 2. 0''x2. 5''(W*L) for 23 33 lb; size 4: 2. 2''x2. 6''(W*L) for 31 40 lbs; size 5: 2. 4''x2. 8''(W*L) for 40 55 lbs; size 6: 2. 6''x3. 0''(W*L) for 52 65 lbs; size 7: 2. 8''x3. 2"(W*L) for 63