Some years ago a fellow called and asked if I could make a very light weight waterproof sleeve to fit over his boots and be as tall as his legs. I asked what he needed them for since there are several brands of waders made for fly fisherman. He wanted something lighter and very compatible. His specific need was something to put on when crossing streams and then remove. Sounded good to me. They are made from 200 denier coated oxford nylon upper and a rubberized sole with all seams taped. They weigh 8.9 oz, total. Cost $60.00, includes stuff sack for storing.
* Tip: Take a small cloth for wiping the waders down after your liquid crossing for cleaner storage. *