Upgrade tailgates and watch parties with the sports-themed Tovolo Set of 4 Sports Ball Ice Molds! Two football and two golf ice molds will ensure this giftable set will please any sports fanatic in your life - whether it?s you or a friend. The easy-to-use molds feature a stable plastic base and a leak-free silicone lid. Simply fill the plastic base to the fill line, then gently insert the silicone lid to create a seal. A hole in the top of the lid allows air to escape as the water freezes, creating seamless spheres.