Toddler Tables seat belts thread through the seat to provide a secure seating environment. The seat belts are made of one inch polypropylene with a side release buckle. The two piece buckle has the socket end sewn to the seat belt, whereas the plug end allows the belt to be threaded so that it can be tightened and released for removal and washing. Adults can easily operate the buckle but young children cannot release the buckle. This allows, even the most adventurous children to be safely contained in their seat. Pack of 3 replacement belts. Recommended age 0-24 months