Please Note: 1. Before purchasing this product, please refer to the size chart shown in the picture and measure the size of your dog.2. Before use, let your dog smell and touch the product and eliminate its concerns.3. The 6 same buckles on the top of the product are used to connect the belts, rather than to fasten.:- Dogs like outdoor free air. This is the dog's nature. When dogs lose their ability to act for some unfortunate reasons, we should not trap them at home, which makes the dog become depressed and affect health. Our products can help them regain their freedom like a healthy dog, take a walk outside, go up and down the stairs and get on and get off cars.Service Target:? Old, disabled dogs;? Dogs with rheumatism;? Dogs with arthritis;? Dogs in the recovery period after surgery;Product Features:? Breathable: -This product can still be used in hot weather;? Soft: -More comfortable;? Friendly to the male dog: -Male or female dog can defecate normally when using the product;? Washable: -Easy to clean, please wash by hand with cold water and dry naturally;? Reliability: -Go up and down stairs will not fall down. ;? Multi-Usage: -The product can be used for dogs with foreleg or hind leg injuries;Product Size:- XSmall size: chest=13-16 in.- Small size: chest=18-21 in.- Medium size: chest=22-25 in.- Large size: chest=26-29 in.- XLarge size: chest=30-35 in.- XXLarge size: chest=36-39 in.package:- packed in bagwelcome to our store! Our products have been tested, inspected and packaged prior to inspection. If you have any questions, please feel free to contact us then we can provide you with the best service. If you are not completely satisfied, we will refund your order.