This outfit is fastened with Velcro. If your dog's chest circumference is over 40cm, it may be a bit tight and difficult to fasten. The chest circumference of the outfit is approximately 45cm (measured by hand), but we recommend it for dogs with a chest circumference of around 40cm or less when wearing it. My dogs are around 5kg, 5kg, and just under 5kg, and while they can wear it, the Velcro on the chest tends to come undone. For some, it's also a tight fit. Design: Checkered pattern with fleece lining inside. Features a red pocket. Fastens with Velcro. Worn a few times (3-4) several years ago. Home cleaned and stored at home. Please refrain from bidding if you are concerned about odors. If you are looking for a perfect condition item, Please be aware that there may be some overlooked stains or other imperfections. Please refrain from bidding if you are sensitive to such issues. Returns, claims, and exchanges are not accepted. The item will be shipped folded. Thank you for looking.