Dear Sir/Madam, Type:Kids' Bike Wheel Size:16 Frame Material:Aluminum Alloy Fork Material:Aluminum Rim Material:Aluminum Alloy Net Weight:17kg Gross Weight:10-18.5kg Product name:kids bike,children bike,kids bicycle Size:12 14 16 18 20 Brake:F/caliper brake R/band brake Tire:Air Tyre Frame:High Carbon Steel/Alu-Alloy Style:Ride Material:High Steel Rim:Aluminum Alloy Rim/steel Saddle:Comfortable Color:green, red, yellow, cyan/Customized Show More