Measurement method: use a soft ruler to make a circle around the cat's body behind the front legs and measure at the widest part of the chest, 2-3 cm must be reserved, which corresponds to the length of the cat's chest;. After use: the recovery suit protects wounds, stains, bandages, hotspots, skin problems and incontinence. Prevents licking and scratching, keeps the cat calm and relieves stress. Elastic neckline and buckle design: it is comfortable and not tight. Easy to install and remove. Make it easier to care for your pets. SOFT BABY COTTON: 100% cotton, super soft and breathable, washable and dries quickly. It is cuddly but not tight at all. Ideal for cats after surgery. The suit can be used as comfortable inner clothing or pyjamas. It is easy to put on and take off: protects step and prevents harassment of other pets on physiological time. Easy to wear and fits on the skin without deformation after washing. Most cats are highly resistant to restraint. If the sterilisation suit you purchased is not elastic enough, the cat is restless and tries to take off the sterilisation suit. This is very bad for his wounds.