Very comfortable and durable, stiff sole keeps the feet cut free. Use these ww boating and have been pleased with the protection they offer while scrambling over rocky shores at put ins/take outs and all else in between. Fairly grippy on wet rocks, have yet to slip. Easy on/easy off. Like the terraprene alternative to oil derived neoprene (more here http://www.nrsweb.com/tech_talk/terraprene.asp). Only downside is that the things stink to high heck, like really stink. I do have gnarly feet, but these things take it to a new level. Not sure if it is the terraprene or what, but it is pungent. Not enough of a bother to downgrade the shoes though, love them!