FWIW - I've been pretty impressed with the quality of all the Sea to Summit products I've come across. I've got a couple of their dry bags that are completely bomb-proof and their Reactor sleeping bag liner totally rocks.
no affiliation, just a very satisfied customer
Another happy S2S customer. Use the shower bag for everything from washing dishes to hands and, of course, showers. Have six dry bags in different sizes. A Reactor liner in my camping kit, BoB and GHB. Several sets of their aluminum eating irons and one of their tarp/ponchos. Good stuff, and reasonably priced (well, the poncho was a bit pricey, but not too bad).