Parisian Pet Dog Cat Harness Step-in Vest, Plaid, Camo, Leopard, Polka Dot Dress Sizing does NOT correspond to your pets breed size or weight. Measure your pet and refer to our sizing chart to find the best fit before ordering. Made of soft air mesh and polyester to maintain pets dry and cool during summer. Adjustable chest belt and quick-release buckle. Make sure all measurements fit within the dimensions with a room to spare in the chest and neck. The back buckle and strap are tested to provided additional security to the fastener strap. Great for walking, running, hiking and all outdoor activities, maintains your dog's natural movements