Designed specifically for younger swimmers, the Speedo Kids’ Splash Jammer Vest works to build confidence while learning to swim. US Coast Guard approved as a safety flotation device, parents can relax with confidence while their kids are in the pool. This vest features an easy on-and-off design, shoulder straps for a secure fit and a flexible design for comfortable movement. Closure Type: Buckle. Material: Nylon. Dimensions (Overall): 10 Inches (H) x 23.5 Inches (W)