Child's Bike MTB- Pro Brand: Woom Model: OFF 4 Equipment: SRAM X5 9-speed Color: Black Frame Material: 6061-T6 aluminum tubes, tapered & hydroformed Frame Warranty: 10 years (conditional on direct registration on Woom's website) Fork: Carbon (multidirectional layers) Frame: Sloping rigid, 20" Rider Size: 1.18-1.30m Age Range: 6-8 years Weight: 8.1kg (without pedals) Max. Allowed Weight: 50 kg Wheelbase: 850mm Tires: Schwalbe Rocket Ron (TLR, ADX) Tire Size: 20"x 2.25" Brakes: Hydraulic Discs: Promax Disc Size: 140mm/140mm Wheel Axles: Front 100x15mm / Rear 135x12mm Seatpost: 250mm, Ø 27.2mm Rear Derailleur: 11-32 teeth Front Derailleur: 28 teeth Headset: Integrated 1 1/8"-1" Cockpit: Flip-Flop Stem, 50mm