Thank you for viewing. This is a size 4 dog tank top made by Lifelike. It's made of breathable mesh material, so your dog can stay cool and comfortable even in hot weather. It has only been used a few times and has no stains or fraying. It's in very good condition. Size 4 is the perfect size for dogs weighing around 5kg. It's a lightweight tank top, so it's easy to move in and easy to put on and take off. The contact-cooling material feels cool to the touch, making it ideal for summer outings. Please feel free to contact us if you have any questions. Thank you.