The installation of this tricycle is more complicated. You can scan the qr code on the picture to watch the video to learn the installation. Assembly tip: the pedals need to be installed tightly. This 3-wheeled bike is constructed from high-carbon steel with thicker frame tube support rider and cargo combined weight up to 331 lbs. 7-Speed flywheel offers more fun in riding shifters for effortless pedaling and shifting. The tricycle has a fodable front basket and a large rear basket the bike seat and handlebar are both adjustable 26 big wheels with full wrap fenders keep its clean and neat perfect for leisure shopping exercise or any time place you want. Specifications: main material: high-carbon steel color: blue speed: 7 total size: 68.9 X 29.53 X45.28 175* 75*115Cm front basket size: 7.68 X7.68 X13 19.5*19.5*33Cm rear basket size: 17.32 X 20.07 X 9.84 44*51*25Cm wheel size: î 26