Our redesigned traditional ladies neoprene features a Flex-Back insert which provides an improved fit. The special Flex-Back material is constructed of Poly-span fabric that stretches like spandex. Smooth-span poly/spandex fabric inner. Short-waisted design exclusive for ladies. Individually sized. Two 1-1/2" belt/buckle design, 2 encircling body belts. PVC foam construction. U.S. Coast Guard Approved Type III. 90 lbs. and over.