For developing skills in intermediate swimmers, Poolmaster's Hungry Frog Swim Vest for kids is comfortable and made of 100% Neoprene surrounding a closed-cell foam interior which aids in buoyancy. The beautifully designed children's swim vest features an easy-glide zipper with tab-top closure. An added security strap is included with a locking side-release buckle. Recommended for ages 3-6 years or weight between 40-66 lbs. Swim in confidence, comfort, and style!