Our durable and stylish Mog & Bone Neoprene Harnesses come with sturdy, adjustable nylon straps, a thick printed neoprene outer layer, and a soft, flexible mesh inside layer for your dog's comfort and temperature control. Mog & Bone harnesses are made with high quality fittings and a contemporary designer print to coordinate with our range of Neoprene Collars, Leads and Bandanas. The harnesses are easy to fit and allow for greater control over your dog when you step our for walks together. SMALL = neck size up to 30cm, chest 38cm - 50cm MEDIUM = neck size up to 35cm, chest 40cm - 56cm LARGE = neck size up to 43cm, chest 52cm - 78cm EXTRA LARGE = neck size up to 44cm, chest 60cm - 84cm