We just recieved in a few various folding bike models by Sava Bikes. They are light weight and all have carbon material frames. They come in 3 wheel sizes: 14in, 16in, and 20in. Single speed or multi-speed with Shimano derailleurs. We even have a 14in electric pedal assist model. They're great for public transportation commuters, since they're easy to carry onto busses and BART trains around the SF Bay Area. You can even put them into compact car trunks. Check out a few pictures I took of the models we received.