I bought a nice pair of lightweight (10 oz. /pair, size Large) of black plastic sandals at WALGREENS.

The name on the heel is "Caribbean Cartel". They appear to be made of a very dense closed cell foam type of black plastic B/C they float. The sandals come as Crocs knock-offs or, like mine, as river sandals W/ as small nylon strap & Velcro closure. The soles are about 3/8" thick and have a decent tread pattern.

For $9. or so they seemed FAR superior to the Sprint Aquatics slippers I've tried (and worn out in a wek of camping), I'd use these sandals for river crossings as well as around camp.

Yeah, 10 oz. may seem like a lot to carry for camp shoes but ya gotta choose yer luxuries and, along with my full length UL Thermarest, these are a "necessary luxury". Plus, the chances of getting anything lighter that is this substantial and multipurpose is nearly impossible.

Eric