Dog Life Jacket, Shark Style Pet Floatation Vest Puppy Life Saver Safety Swimsuit Preserver with Rescue Handle for Swimming Pool Beach Boating

Size Chart: XS: Back Length 7.9"/20cm; Chest Girth 11.8"-16.5"/30-42cm; Neck Girth 9.8"-13.8"/25-35cm; Recommended Weight 4.4 lb - 8.8 lb/2kg - 4kg S: Back Length 10.2"/26cm; Chest Girth 16.1"-20.9"/41-53cm; Neck Girth 14.2"-18.5"/36-47cm; Recommended Weight 8.8 lb - 15.5 lb/4kg - 7kg M: Back Length 11.8"/30cm; Chest Girth 16.1"-24.8"/41-63cm; Neck Girth 15.7"-18.9"/40-48cm; Recommended Weight 15.5 lb - 22 lb/7kg - 10kg L: Back Length 13.4"/35cm; Chest Girth 19.7"-29.5"/50-75cm; Neck Girth 16.5"-21.3"/42-54cm; Recommended Weight 22 lb - 44 lb/10kg - 20kg XL: Back Length 17.3"/44cm; Chest Girth 27.6"-38.6"/70-98cm; Neck Girth 19.7"-27.6"/50-70cm; Recommended Weight 44 lb - 110 lb/20kg - 50kg Warm Tips: If your measurement is between two sizes, we recommend the larger size for more comfortable fit about your dog.