Infant trike model starts at 10 months old for recommended age of use and goes up to 5 years old or up to 20kgs/44lbs for the balance bike stage. 2-height adjustable saddle seat made of soft, anti-slip TPR Built-in front freewheel system with lock and unlock control button High-quality 250mm front and 220mm rear EVA foam wheels for puncture-free rides. Curved handlebars with comfortable and durable TPR ergonomic grips. Introducing Globber's Explorer Trike Series, transitions effortlessly from infant trike, guided trike, training trike, to a balance trike, all 4 in 1 product ! Globber's Explorer 4-in-1 Trike delivers like no other - it's a trike AND a balance bike all in one with a 100% screw-less design. Innovative, smart tricycle and balance bike design for everyday living. Thanks to our tool-free design, patented wheel mechanism and built-in clever storage with modern design, parents can effortlessly transition this product as their child grows. For all replacement and new parts please visit www.globberparts.com For warranty issues or general inquires please email Parts@Globber.com SHIPPING NOTE: this item ships in the packaging shown without an over box, item will be visible upon delivery.