Dahon Folding Bikes 2019 MARINER Incredibly versatileFolds in under 15 secondsMost popular folding bikeDalloy Sonus Tubeset frame with Visegrip forged hinge8-speed Shimano FT35 Rear Derailleu20 x 1.6 Schwalbe Citizen tiresAlloy Radius Telescope with Fusion Technology handlebar $645 Amazon