Those sea bags used to be sold by Defender - I bought one, but can't recall seeing them elsewhere. I tried to talk Stephen into giving one away with a new dingy, but he didn't go for the idea. The zippers are short-lived (metal sliders) and I replaced my main zipper with a good YKK zipper. The small pocket zippers weren't worth the effort, so I just removed the small pockets. Also, if I were to make a bag I'd skip the padded top - not worth the effort.