Those looking for a small and manageable folding bike should consider in this black Columba bike, which can be folded into a very small profile. Simple yet fashionable, this bike has a black frame, black 20-inch wheels, and a handlebar accent. The frame’s top tube has a unique prismatic flair. Perfect for short-distance travel, this bike can easily accommodate a brief trip to the convenience store or a ride around the park.

The bike is manufactured with parts crafted with both style and quality in mind. The seat post height and handlebar can be adjusted. This bike can be folded to fit into a cubic space of 31"x14"x25”.

Six Speed.
20" wheels, folding steel frame & steel fork.
Front/rear V-brake.
alloy rim.
foldable pedals.
Kenda 20"x1.75" tire. 
front/rear steel hub.
steel kick stand.
Recommended for rider's height 4'6" ~ 5'10".
Supporting rider's max weight up to 200 lbs.
Net weight 30 lbs. Shipping weight 34 lbs.
Folded dimensions 31"x14"x25". 

A user can watch videos for detailed instruction of folding bike installation at Frequently asked questions.