Using the Burley Baby Seat Insert is super easy. First, make sure your Burley trailer has a 5 - point harness. Then, quickly and securely install the insert in the trailer. Place your baby in the soft hammock seat and fasten the 5 - point harness to keep them safe. You can start using it when your baby is as young as 1 month old for strolling. When it comes to maintenance, you can spot - clean the soft materials with a mild detergent and water. Keep it in a dry place when not in use. Always check the harness and the overall condition of the insert before each use to ensure everything is in good working order.