RIDER SIZING Recommended Age: 4 - 6 Recommended Inseam: 19" - 22" Recommended Height: 3'8" - 4'2" Max Rider Weight: 75lbs. Product Weight: 29lbs. Learn more about how to find the perfect size here! Riding Together Is Better With The Kazam Link Trailer Bike! Easily attaching to most adult bicycles, this unique trailer also folds for easy storage and transport. Featuring a durable steel frame, adjustable seat post, and safety accessories, this trailer bike is sure to be a fun time for both parent and child! KEY FEATURES: Steel Folding Frame Steel Rim Steel 18T Freewheel Hub Stainless Steel Spokes Oversized 16" Air Tire with Schrader Valve Standard Chain Deluxe Padded Saddle Steel Seat Post with Quick Release Steel BMX Style Handlebar Rubber BMX Grips Steel BMX Stem SyncLink Attachment System Attaches to Most Bikes Safety Flag & Light Compatible with Large Tire Sizes