When fully assembled, the mat is designed to be safe for children and contains no small parts that could be swallowed. Even if the valves are loosened or the safety zippers are opened, it is designed so that children cannot access the small part of the valve. The mat has been carefully developed to ensure it is safe for everyone, and the risk of children reaching this part is virtually eliminated. That's why our products are safe to play with from the age of 0.