Burley Kids' Piccolo 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 Tandem bike trailer with patented rear rack-based hitch connection system; comes Burley rack included Recommended for children from 4 to 10 years old weighing up to 85 pounds Lightweight aluminum frame with adjustable seat and handlebar 20-inch wheel for smooth rolling; 7-speed twist shifter for versatility Five year frame warranty; one year hitch and rack warranty