SPEEDO Begin to Swim UV Polywog SuitNew! Watercolor Surf print design. Floatation by soft and durable neoprene. Great teaching tool and water confidence building tool for beginning swimmers. Back zipper for easy on and off. Features UV Block the Burn? with more body coverage for greater sun protection, tighter knit fabric for higher level of protection and improved fit so that overstretched product does not decrease the UPF rating, while wicking away the moisture with Speedo? wicking technology. It's the perfect technology combo for a hot day at the beach or pool.83% Nylon / 17% Spandex