You will receive a Christmas card as a gift for the Christmas Day! Size XS is for Pet within 3Kg Size S is for Pet 3-6 Kg Size M is for Pet 6-10 Kg Size L is for Pet 10-15Kg The front and rear leg distance for Size XS: 24 cm The front and rear leg distance for Size S: 30 cm The front and rear leg distance for Size M: 32 cm The front and rear leg distance for Size L: 35 cm [Dog Grooming Hammock Harness]: If your dog hates nail trimming or nail filing, use this dog hammock for grooming at home, you can restrain him effortlessly and you never need to fight with your pet for nail clipping again. As owner u can do pet grooming, clipping nails, dental & ears care, checking skin without going to a pet grooming shop or pet. [Comfortable and Soft]: Using Double-layer fabric design, Inner fabric use High-density knitted material, and the outer uses 3D air-mesh technology. Besides, Thickened edge of the front and rear legs and excellent breathability can reduce friction to protect pets, and keep puppies or cats calm and maximum relaxation.