Onyx Pet Safe Nylon Dog Life VestThis special vest is designed to provide swimming endurance for your pet and provide safety and security while in the water. It features three adjustable body belts and quick release buckles for a secure fit and is made of durable nylon fabric. This vest is also designed to resist punctures and tears and has a handler's strap for easy recovery.Features: Three Adjustable Body Belts; Quick Release Buckles; Durable Nylon Fabric; Puncture and Tear Resistant; Handler's Strap; Color: Yellow and Navy BlueSizes: X-Small: Weight between 5 and 15 lbs. Neck size of 10" to 13"; Small: Weight between 15 and 30 lbs. Neck size of 12" to 16"; Medium: Weight between 30 and 60 lbs. Neck size of 15" to 19"; Large: Weight between 60 and 80 lbs. Neck size of 18" to 22"; X-Large: Weight over 80 lbs. Neck size of 18" to 24";