Size & Fitness: In general, S for 1-2.5kg / m for 2.5-4.5kg / L for 4.5-7kg / xl for 7-10kg / 2xl for 10-14kg / 3xl for 14-22.5kg < BR/> Effect: prevent pets from sliding on wooden floors, protects the sofas against animal scratches, helps the animal weak to get up more easily. Characteristic: anti-anti- silicone gel Dressing on the soles to provide additional traction, a rubber reinforcement inside the socks to be easy to hold. Package and measurement: set of 4 socks, select the correct size according to the width of the your dog’s paw, measure it by referring to image 2 before buying it. guarantee: 100% refund or replacement will be supported if you do not like it or others problems can be contacted at any time.