Here's what other sites are saying:
Bring the kitchen sink on your next camping trip, literally. A collapsible basin for washing dishes, the Seattle Sports Pack sink features a generous 3.5 gal. capacity for your campsite cleanup. Tough and durable, the Seattle Sports Pack sink is constructed with rugged vinyl-coated nylon and a heavy-duty bottom. Semirigid stiffeners keep the top of the sink open for easy use. Nylon webbing handles are easy to grip while carrying water from the source to your camp. Closeout.
The Pack Sink's unique shape makes cleaning larger items simple, and it folds flat for easy storage when not in use. Constructed with waterproof, rugged vinyl, radio-frequency welded seams, webbed carrying handles, and additional top stiffeners to hold it open when in use. Hold 3.5 liquid gallons.
Seattle Sports Super Sink II
Seattle Sports Jumbo Camp Sink
Sea to Summit The Kitchen Sink 5L
$20 - $29
Sea to Summit Folding Bucket
$30 - $39
Seattle Sports Pocket Bucket
Sea to Summit The Kitchen Sink 10L
$27 - $31
Sea to Summit The Kitchen Sink 20L
Blue Sky Gear Travel Sink