Incorporates our Award Winning Harness Chest Plate for a secure, custom fit Quick Release front panel messenger style packs for easy access to things you use all the time Waterproof Zippers Padded carry handle Reflective trim Leash Caddy keeps your leash on the dog and always within reach SIZING: SMALL- 15-40 LBS Chest/Girth 16-29" MEDIUM- 35 - 70 LBS Chest/Girth 22-37" LARGE- 65-100 LBS Chest/Girth 26-45" X-LARGE- 95+LBS Chest/Girth 34-55"