Product Details Bike Type Road Bike Age Range (Description) 12+ Number of Speed 7 Speed Wheel Size 700C *28C Frame Material Aluminium Alloy Frame Frame Size 47cm Brakes Double Disc Brakes Sturdy and durable aluminium alloy frame, provide safe and stable cycling experience,comes 85% assembled. 7-speed rear derailleur and 7 speed shifter ,make gear changes easy and smooth. Aluminum rims, 700*28C High-performance tires,good riding experience. Front and rear double disc brakes , Sensitive braking system More secure and faster . Size 47 cm for people between 5'1" to 5'7"; Check size before your order; For people over 12 years old UPC Does not apply Bike Type Outdoor Bikes Brand Unbranded Color Green Material Aluminium Allo.