QUMY Dog Shoes for Large Dogs, Medium Dog Boots & Paw Protectors for Winter Snowy Day, Summer Hot Pavement, Water-Resistant in Rainy Weather, Outdoor Walking, Indoor Hardfloors Skid-Resistant SolePlease 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. 8''x2. 3''(W*L) for 11 23 lbs; size 2: 1. 9''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