Astral - BirdDog Life Jacket PFD for Dogs Intended to keep your dog afloat in any water-based activity. Features a 500 denier Cordura nylon shell and a 200 denier high-tenacity nylon liner. Center front chest buckle, PE foam insert, nylon webbing, and heavy duty acetal hardware. Features a grab handle, a D-ring for the leash, a white light lashing loop, and reflective accents. Select a size based on weight and chest measurement: XS for 5-15 lbs and 13-19 in, S for 15-25 lbs and 17-25 in, M for 25-45 lbs and 21-31 in, L for 45-75 lbs and 26-35 in, and XL for 75+ lbs and 30-39 in.