Designed to build upon children's early balancing development whilst still maintaining stability. Wheels are made of durable polypropylene with solid rubber puncture proof tyres. Tyres tested and surpass 100,000 cycles wear test. Solid rubber safe and comfortable handlebar grips. The sturdy base is made from non-slip, durable and waterproof ABS. Suitable for age 3-4. Height to Handlebars: 66cm.