Specifications Color: Black + Blue Size: 12 inch/14 inch/16 inch/18 inch Material: High Carbon Steel, Rubber, PP, PVC, TPR Weight Capacity of Seat: 145 lbs Size: 12 Inches Product Dimensions: 35.5" x 19.5" x 25"-27"(L x W x H) Saddle Height: 17.5"-19.5" Saddle Size: 8" x 5.5" Inseam Size: 16.5"-18.5" Suitable Height: 31.5"-41.3" Suitable Age: 3-4 Years Old Net Weight: 20 lbs Size: 14 Inches Product Dimensions: 40.5" x 19.5" x 27"-29" (L x W x H) Saddle Height: 19.5"-22" Saddle Size: 8.5" x 5.5" Inseam Size: 18"-20.5" Suitable Height: 37.4"-43.3" Suitable Age: 3-5 Years Old Net Weight: 21 lbs Size: 16 Inches Product Dimensions: 45.5" x 21" x 29"-31"(L x W x H) Saddle Height: 21.5"-25" Saddle Size: 9" x 6.5" Inseam Size: 19.5"-23" Suitable Height: 41.3"-51.2" Suitable Age: 4-7 Years Old Net Weight: 23 lbs Size: 18 Inches Product Dimensions: 49.5" x 21" x 31"-33" (L x W x H) Saddle Height: 23.5"-27" Saddle Size: 9" x 6.5" Inseam Size: 21"-24.5" Suitable Height: 47.2"-59.1" Suitable Age: 4-8 Years Old Net Weight: 25.5 lbs Key Features ● Grow with Your Little One: The saddle is height adjustable in 17.5"-19.5"/19.5"-22"/21.5"-25"/23.5"-27", while the handlebar can also be adjusted within 3", catering to riders aged 3-4/3-5/4-7/4-8 years old. The inseam size is 16.5"-18.5"/18"-20.5"/19.5"-23"/21"-24.5". ● Comes with A Dual Brake System: The front hand brake enables kids to control the brake with their small hands. Moreover, there is a fully enclosed chain guard to prevent kid's feet from getting pinched, ensuring higher safety. ● Smooth and Safe Riding Experience: The anti-crack and wear-resistant tires ensure a smooth and steady ride on asphalt roads, cement roads, brick roads, and lawns. 2 detachable training wheels help beginners keep balance and pedal independently.