YBIKE Extreme is a more versatile and a slightly larger version than the original YBIKE. It features shiny aluminum frame, a narrower back wheel base and larger rubber wheels that make it a more versatile ride for children 3 to 5 years old. When it comes to kids, safety is the main concern. For this reason the front wheel is considerably further forward, affording a bigger turning radius, which reduces the risk of falling over the front when turning. The back wheel is also covered to stop children from riding over their feet. The YBIKE body is designed for better clearance of obstacles and the larger wheels produce a safer ride on uneven surfaces. Enjoy the freedom of the outdoors and the joys of cycling from as early as two years old. The YBIKE will help your child develop an early sense of balance and control, along with independence, self confidence and happiness! Kids who tested the bike for 20 30 minutes twice a week showed the following improvements Substantial improvements in both static and dynamic balance, substantial improvements in bilateral coordination and observable improvements in physical self confidence Balance amp Movement Designed and engineered to help your child build the skills, balance and coordination needed to ride a big kid bicycle Large Wheels Larger wheels were designed for safer play and easier riding on uneven surfaces High Ground Clearance The ground clearance of the body is high enough to ensure safety regardless of terrain Safety First Other similar products use a process called blow molding. It reduces design freedom and tends to have weak points Not YBIKE! Dimensions 21 H x 33.70 L x 12.00 W Seat to Floor Dimensions 14.00 inches Ages 3 5 years Weight Capacity 120 lbs.