Burley Kids' Kazoo Bike Lightweight aluminum frame for durability, high performance and a solid ride Front splash guard Innovative Burley patented hitch system with ball-bearing guided pivots to provide shimmy-free performance Adjustable handlebar and seat post Recommended for children 4 to 10 years old and up to 85 lb/38.5 kg, with a recommended 2-1 adult weight-to-child weight ratio Innovative Burley patented hitch system with ball-bearing guided pivots to provide shimmy-free performance and double locking mechanism for extra security Hitch sits perpendicular to the ground, providing superior handling and stability-stable and snug in-line handling with over-axle pivot attachment Lightweight aluminum frame offers durability, high performance and a solid ride Adjustable handlebar and seat post recommended for children 4 to 10 years old and up to 85 lbs. Towbar removes for compact storage and transport