SIMPLE & EASY TO INSTALL -- The child bike seat is easily installed & removed, no need more tools. Applicable to Mountain Bikes, Hybrid Bikes, Fitness Bikes.(Note: 1. Only suitable for bicycle seat post diameter less than or equal to 5.5 cm and down tube width less than or equal to 6.2 cm. 2. Not suitable for bicycles with cables on the top tube. ) SAFE & COMFORTABLE -- USA Safety Standard Certificate. Comfort, safety, an attractive and innovative design, and a good position where the child can fully explore the scenery. Soft and comfortable saddle, hollow for ventilation. Adjustable handrail and fork arm. INTERACTIVE & FUN --Toddler bike seats front mounted design, better view and more enjoyable ride for the child, enjoy safe family bonding bicycle rides with this Child Seat made with Aircraft-Grade aluminum alloy construction. FOLDABLE -- Baby bike seat is easy-folding, ultralight (about 2 pounds), with a free packing bag. Designed and tested for kids from 2 to 6 years old, up to 4.1 feet(125cm) height. PACKAGE INCLUDE -- Packing list: 1 x child bike seat and accessories, 1 x packing bag. Please kindly note: This seat was specially designed for Mountain Bikes, Hybrid Bikes and Fitness Bikes. If you need the one for Cruiser Bikes, Foldable Bikes and City Shared Bikes, please search this ASIN "B07FMWM2D9" directly.