From the Oaki site: “this one-piece suit is a versatile outer layer for adventuring in any weather. The suit is lightweight, package, and seam-sealed with adjustable waist cinch. Reflective safety strips ensure better visibility. Waterproof center zipper and Velcro arm cuffs keep clothes dry. Neoprene cuffs provide for a secure fit around boots… the suit is rated to 8000mm water resistance and 3000mvp fabric breathability. Sized to fit over layered clothing as a waterproof shell layer.” We’ve used these suits for many years and upgraded sizes as the kids grew. This particular suit was worn about 4 times. Some dirt marks. No tears. Excellent condition.