Product review (4 stars): This Thing Isn't Bad At All--It Does What It Says It Will Do
I decided to buy this product because I needed a way to wash clothes at a vacation camp that was a step up from using the sink and a washboard.  This fills the bill.

I went to YOUTUBE, and found a video of a fellow  demonstrating the item, [...]  and that was enough for me--I ordered the thing.

It's Idiot-Easy to use.  Throw in a few litres of warm to hot water (the warm water helps create the vacuum, and pulls the water through the clothes) with a teaspoon of detergent (you don't need much at all), give it a quick swish, then toss in the clothes--a few pounds worth.  I was able to do a few tee shirts and not-terribly-heavy trousers in one go with no sweat.  Then you screw on the top, making sure you have a tight seal, and start turning the handle-thing.  You can either use the little handle and get it going at a fast clip, or simply bat the thing round and round using the screw-down flidget at the top and the little connector to the 'bayonet drain' at the bottom.  You do this for two minutes or so.  Then, making sure you've got the thing near a sink, you attach the jazzy bayonet device to the bottom and the soapy water drains out.  Throw in another few litres of water, screw the top on, repeat the process, and your clothes are nicely rinsed.  And they look and smell CLEAN.

For the terminally lazy, yep, you have to either SQUEEZE those clothes or let them drip dry.  I recommend squeezing, otherwise you'll be waiting forever for them to dry, if you don't live in the desert.  I'd also advise you to do a little pretreating if you've got some profoundly nasty dirt on your clothes--it's not a miracle worker!

For a situation where you're on holiday and need to wash clothing infrequently, but you don't want to run around in stinky clothes or spend a precious hour or two of vacation time at the laundromat, this is just the thing.  The clothes come out CLEAN--not like you've moved them around in funky water and hung them out.  It's not real big, you can stash it in a closet when you aren't using it,  and you can set it up by the kitchen sink and get two loads of  laundry done inside of ten minutes once you get a rhythm going.  Then all you need to do is peg it out on the line outdoors, or hang it over the bathtub to dry.

Watch a news program review the thing, here:  [...](In my opinion, the reporter uses too much detergent in her demo--less is more!)