The Onyx Neoprene Pet PFD pet life jacket will keep your pet safely swimming so you wont have to worry. The soft neoprene is comfortable and warm for your pet and allows freedom of movement. The zipper on the top of the vest allows for easy on/off functionality while the adjustable body belts adjustable straps offer a better fit. Features include a sturdy handlers strap for easy recovery and reflective surfaces for increased nighttime visibility. The small size fits pets weighing 15-30 lbs. with a 12-16 inch neck 22-28 inch chest and 18-24 inch waist.