Life vest made in 80% neoprene and 20% polyester lining. Designed with both a zip and velcro closure. Has a safety strap with a buckle so that your child does not slip out of the vest. The life jackets allow your little swimmer to improve their skills all summer long with the removable flotation elements inside. As your child grows in both size and confidence over the summer, you can remove items gradually, starting with 1+1 and working your way up.