Montague Paratrooper Elite 27.5" Folding Bike, Gloss Black/Red 18in Frame: For riders 53  510. Standover height is 30 20in Frame: For riders 511  64. Standover height is 31 Speeds: 30, Wheel Size: 27.5, Folding Time: 20 sec, Folded Size: 36x28x12 Approx Weight: 27lb