Under the Sea Step In Dog Harness. Under the sea is the place to be! This step-in harness is made with quality ribbon sewn onto durable high-tensile strength nylon webbing and features solid brass hardware and a buckle on the back that is Coast Guard approved for high weight hold. Harness has three different adjustable points ensuring a customizable fit for your dog. Our model Rosie a 15 lb. Beagle Mix is wearing a size M. Machine wash cold on gentle cycle; air dry. Made in the USA. Don't forget the matching collar and leash!Sizing:XS: Chest: 8-16 in. | 5/8 in. Wide RibbonS: Chest: 10-20 in. | 5/8 in. Wide RibbonMN: Chest: 12-25 in. | 5/8 in. Wide RibbonMW: Chest: 14-26 in. | 1 in. Wide RibbonL: Chest: 18-32 in. | 1 in. Wide RibbonXL: Chest: 22-38 in. | 1 in. Wide Ribbon