Using the Topeak child seat is easy. First, attach the seat to the heavy - duty rack using the tool - free BabySeat™ attachment. Make sure it's securely in place. Then, adjust the shoulder harness to a comfortable height for your child and fasten it. Put your child's feet on the adjustable footrests and use the straps to keep them away from the wheels. When it's time to remove the seat, just use the same tool - free attachment. As for maintenance, regularly check the harness, footrests, and straps for any signs of wear. Clean the seat with a mild soap and water, and dry it thoroughly. Don't forget to check the rack and the attachment points to ensure everything is in good condition. Always follow the safety standards and don't use the seat if it's damaged.