Our redesigned traditional neoprene vest just got better! Featuring a Flex-Back insert which provides an improved fit for the child and youth series. The special Flex-Back material is constructed of Poly-span fabric that stretches like spandex. We then carried the Poly-span material into the complete inner panels which provides a soft surface that gently slides against your skin. Our Infant neoprene vest features 1.5mm neoprene inner and outer, 1" adjustable belts and buckles. Pop-up pillow provides added head support with a convenient grab strap for quick recovery. Infant vest is U.S. Coast Guard Approved Type II, safe for babies up to 30 pounds. Child & Youth vest are U.S. Coast Guard Approved Type III.