I recently had my dog neutered, so I bought this from the vet and then purchased more on Amazon. I've worn it for 10 days and washed it several times. It's a set of two post-operative suits made of breathable mesh material. I will also include the instructions. The size is DM, and my dog is a 5.5kg Jack Russell Terrier. For male dogs, it can get dirty if it shifts a little, so I recommend having two post-operative suits if you're considering buying one. I bought one from the vet, and it got a little dirty the next day, so I quickly bought another one on Amazon. It stretches very well, and my dog doesn't seem to mind it much. For more details, please see this website: (https://www.full-of-vigor.jp/c/small_size/elizabethwear_s/14-06203-1) - Color: Light Blue - Size: DM Neck 22-26cm, Chest 34-39cm, Abdomen 33-36cm, Weight 3-5.5kg - Material: Mesh #fullofvigor #フルオブビガー