I've got an old Schwinn "Sidewinder" (26" wheeled 7 speed mountainbike) that I've been riding up & down the beach for the last ten years. I usually hose it down after a beach ride if enough sand and salt water get splashed on it. I bought it at WalMart. It's a steel bike that weighs a ton. I've changed the grip shifters to thumbies. Replaced shift & brake cables, brake calipers, seat, chain, freewheel, tires, tubes, etc., etc., etc.. Never had any problems getting brand new replacement parts or doing repairs. (Parts for it are cheap). Of course, being born in post WW2 1950's I learned how to repair my own bike by the time I was around 10 years old. My god, life was so different in the 60's than it is now. It's sad to see young kids now a days that don't even know how to operate a screwdriver. There's absolutely nothing wrong with most of the inexpensive Wally World bikes. (Of course, some of them really are trash). We're just living in a time when most people have no idea how to maintain and repair simple machines.