Compatible WithKids Bike Seat Fits All Adult Mountain Bikes with flat or sloping top tubes. The Kids Bike Handlebars fit flat or riser style handlebars. They come with inserts to fit 25.4mm and 31.8mm handlebar diameters.( NOTE: Not Suitable for e-bikes or older bicycles with cables on the top tube) Safety and Comfort It is unique and stylish and also designed ultra durable aluminum alloy.The adjustable and soft saddle will not affect the balance of riding. High quality standards designed and manufactured for the utmost safety and comfort. Parent-Child InteractionOutdoor Cycling and Interest Development simultaneously -Designed for cultivating children's interests in MTB cycling and outdoor activities. FeaturesDo not modify the product-The kid bike seat is an accessory that attaches to your bike.The Kids Moutain Bike Handlebar Attachment is extremely lightweight only 5.8 oz. If properly fastened to the bike handlebars the extenders can hold up to 22lbs/10kg on the extensions. Easy to InstallThere are no special tools required to install or remove the Handlebars - just a simple Allen Key (included)- Quick release attachment makes the bike seat for kids super easy to fit and remove. Comes with easy-to-follow fitting instructions