The Patagonia Salt Wading Booties bring a perforated Yulex natural rubber upper to warm-weather saltwater wading, draining water quickly while keeping sand and debris out. The 4mm rubber stays lightweight and low-bulk, so the booties pack easily for travel and dry fast between wades. What Our Gearhead(R) Experts Are Saying:"I've walked shell-covered flats in these without feeling a thing underfoot. The vulcanized overlays on the sole and sides take the abuse so my feet don't have to."