This kid's NRS 2.5 Shorty Wetsuit protects them by holding in their body's heat. The colored panels make them more visible and easy to keep track of. A warm child is going to be a much happier boater! The suit is made of top quality 2.5-mm Dupont® neoprene. We also add titanium to the adhesive layer bonding the inner fabric to the neoprene. The reflective metal particles help hold in your child's body heat without adding bulk.