• Made from durable 500D PVC with high-frequency welded seams | 20L size holds 50 lbs of sand or aggregate | Duraflex clips and d-rings | Bottom strap for quick emptying | Packaged with a 1/2" diameter 12' long braided polyurethane rope rated to 2200 lbs tensile strength | Rust-proof 316 stainless steel clip on each end | Foam composite buoy on one end for easy retrieval and spotting