Adult national standard size Throw Ring Outer diameter: 58cm / 23 inch, Inner Diameter: 35cm / 13.7 inch.The life ring weight is 1.5kg. Long & Durable 98.4FT Lifesaving Floating Rope -- Professional water float rope with a hand ring, long enough in 98.4ft/ 30m, can be floating in the water and convenient to use. Its weight capacity is up to 600KG/ 1330.7LBS. Durable Safety Material AIKANG life ring is made of high-strength polyethylene, filled with polyurethane closed-cell foam, and the hard shell is strong and tear-resistant. The safety factor is higher than that of ordinary inflatable life buoys.The life buoys can withstand extreme weather, suitable for all kinds of ships and docks. AIKANG 98.4FT rescue rope made of durable Polypropylene Fiber which can support weight capacity up to 800KG/ 1763.7LBS.