DESIGN FOR KIDS - 1. This Kids bike comes with stable training wheel early rider. 2.Quick release seat simplify the height adjustment. 3.Saddle with holder to learn riding when the training wheel is off. 4.Foot brake suitable for young rider don't have enough power to manipulate the hand brake. MINIMUM MAINTENANCE - Made of premium steel to survive the bumps of learning, the durable steel frame is backed by our limited lifetime warranty. The bike comes with black tire & single speed, only little maintenance needed due to the simple design. DIY DECAL & SAFE CHAIN GURAD - Your child will get a DIY decal, they could make a unique bike with the decal by sticking their name on the frame or chain guard. The chain guard well protects the chain, it will last longer than other bikes, your child will not get hurt when try to touch the chain. EASY TO INSTALL - The children bike comes with 85% Pre-assembled body and the basic assembly tools, only pump needed for tire, normally takes a novice about 20 minutes to assemble it. If you have problem about assembly or the bike, please contact us. RECOMMENDED SIZE CHART - 12" BIKE FOR 2-4 YEARS (33"-41") TODDLER, 14" bike for 3-5 years (35" - 47") child, 16" bike for 4-7 years (41" - 53") boys & girls, 18" bike for 5-9 years (43"-59") boys & girls. Note: child height may vary even at the same age, please take the height into consideration.