Using this child bike seat is a breeze. First, locate the frame of your bike with round or oval tubes and use the frame mount connection to attach the seat firmly. Make sure it's properly installed before putting your child in. When placing your child in the seat, use the adjustable 5 - point harness to secure them. The harness can be adjusted to fit children up to 40 lbs. Remember, the minimum age for using this seat is 12 months. If your child is younger than 12 months, it's important to consult a pediatrician. Also, regardless of age, the child must not exceed the 40 - lb weight limit. For maintenance, the seat and harness padding are hand - washable and water - resistant. Simply hand - wash them when they get dirty to keep the seat clean and in good condition. This way, you and your child can enjoy many bike adventures together.