Strider Running Bike Features: 1) Designed for children ages 1-5 to teaches them how to balance and steer a two-wheeler. 2) Light weight, easy to control, adjustable seat height and handlebar to accommodate a growing child. 3) Unique frame design has integrated Launch Pad footrests for gliding and learning advanced riding skills. 4) Puncture-proof all terrain tires with sealed bearing and 5/16" steel axles. 5) Environmental friendly, paint certified to be significantly below the CA Prop.65 limits for heavy metal contents including lead. Specification: Designed for children ages 1-5, the strider running bike is lightweight, easy to control and features an adjustable seat and handlebars to accommodate a growing child. Most importantly, the Strider teaches your child balance, coordination and develops glittering confidence. And the strider is steady, stable and safe, at the first feeling of instability, the child will instinctively place his feet securely on the ground. So there are no "tricycle tip-overs" or " training-wheel wobbles" that stir up a fear, hesitancy or dislike of bikeriding. Weight: Super light, less than 7 pounds(about 1/3 the weight of a typical 12" pedal bike with training wheels) Frame design: Unique frame design has integrated Launch Pad footrests for gliding and learning advanced riding skills. Tires: Puncture-proof all terrain tires with sealed bearing and 5/16" steel axles. Construction: Durable welded steel frame and handlebars. Sizing: Adjustable seat height and handlebar to fit ridders from 30" to 44" tall(saddle height adjusts from 11" to 16" from the ground) Environmental friendly: Paint certified to be significantly below the CA Prop.65 limits for heavy metal contents including lead. Weight limit: Ridder weight limit of 50 pounds.