Speedo Kids&#39; UPF 50+ Begin to Swim Polywog Swimsuit, Blue, Large Updated sporty design in our one piece flotation suit with zipper back for easy on and off Great teaching tool for beginning to swim and building water confidence Tapered foam inserts encourage upright position in the water A Level Two in Speedo's three tiered Begin to Swim program to introduce children to swimming UV 50+ "Block the Burn" protection from the sun's harmful UVA and UVB rays