If anyone who wanted these loses out and wants an alternative in the same price
range, we bought 2 Citizen folding bikes for $199 each. They are the Miami
model. We take them camping, fold them up and throw them in the back of our pickup. Comfortable, 6 speed bike, also weighs 32 pounds. We upgraded to the comfort seat for an extra $18 and it was money
Citizen Bike folding bike shop | Portable & Folding Bikes | MIAMI Citizen Bike 20" 6-speed Folding Bike with Steel Frame
Dahons were a little pricey for us and these proved to be a nice alternative. They're not aluminum
though so can't say how they'll hold up in the marine environment
over the long haul. Probably as good as anything else if you don't carry them on deck
exposed to the elements or in a damp locker.