All Estex tool buckets are made of heavy duty canvas or vinyl coated nylon for long wear and use. The top ring is a single piece molded, non-metallic material designed to stay open even under severe and continuous load. The bottoms are made of high impact polymer resins or leather. The bag has leather side supports at the rope holes and a unique Estex feature whereby the bottom is stitched on and the body of the bag is folded back over the stitches to protect the threads from abrasion and excessive wear. This has the added benefit of providing a smooth padded area at the bucket bottom. Otherwise, your bucket becomes a rough sharp source of wear on the bucket truck and on the aerial bucket. The bucket also has a strong UV and rot resistant rope handle.