Swim trainer vest supports your child in feeling comfortable in the water. It is adjustable and offers a secure fit. The trainer vest is easy to wear and comes with a chin-up collar to keep head above water, a heavy-duty zipper and adjustable safety strap for a secure, comfortable fit. The removable collar is also a swim and collect toy for swim practice. The built-in foam pads provide balanced flotation and are designed to place child in the prone (swim) position for learning pre-swimming positions. It is comfortable with soft fabric. The soft UPF 50 fabric helps keep your child's neck, shoulders and upper arms safe from the sun's harmful rays. Pack and go portability. Size. Small/Medium-recommended for ages 2-4 years, 33 lb. Max