Neutrone 5.1 , Adults , MTB , Wheel size 28" , Number of speeds 21 , Frame Alloy , Bicycle seat ZOOM 120 E-MLO , Brakes Aluminium V-shaped , Front gears 3 , Rear gears 7 , Rear derailleur SHIMANO RD-TY300 TOURNEY , Green / Grey , Weight 14.4 kg