20" Weight only 7.9kg Grow-along "Adaptive Frame" 8-speed Shimano Altus gear system with twist grip Internally routed cables All-round tires 20 x 1.75 For children from approximately 4.5 - 7.5 years old / 105 - 125cm. EQUIPMENT Frame: Lightweight, high-quality 6061 aluminum Fork: Lightweight aluminum fork, 1 1/8" Ahead shaft Headset: 1 1/8" Ahead Stem: 3D forged 6061T6 aluminum, length 50mm, angle +7° Handlebar: Lightweight aluminum handlebar, width 500mm, backsweep 6° Grips: Age-appropriate grips, end plugs with cone clamping for non-slip fit, free of plasticizers and pollutants Crank: Forged aluminum crank, sturdy steel chainring with 32 teeth, length 114mm, 2-stage chain guide made of plastic Shift lever: Shimano 8-speed twist grip Derailleur: Shimano Altus Cassette: Shimano 8-speed, gradation 11-32 Pedals: Plastic pedals in age-appropriate size Brake: Tektro V-brakes front and rear, child-friendly Tektro brake levers with reach adjustment, high-quality and smooth-running cables and housings from Jagwire (internally routed) Wheel: Aluminum rims, stainless steel spokes, 20 spokes in front, 24 spokes in the rear Hubs: Aluminum hubs with sealed bearings Tires: Kenda Small Block 8, 20x1.75", low rolling resistance, high grip Tubes: Kenda Superlight with car valves for easy inflation, even at gas stations Saddle: Age-appropriate ergonomics, sturdy upper material, free of plasticizers and pollutants Seatpost: Aluminum seatpost, length 250mm, diameter 27.2mm, adjustable saddle clamp for different seating positions Weight: 7.9 kg (without pedals) SIZE CHART 20" Min. inseam length: 47cm Age from approx. 4.5 - 7.5 years Size from approx. 105 - 125cm The most important and accurate criterion for choosing the correct frame size is the inseam length. Age and height provide only a very rough guide. Please measure the inseam length with shoes on, as shoes are worn while cycling.