High Quality: ice hockey molds are made of food-grade PP-safe material, BPA-free. The whiskey ice ball mold is very safety and durable. When injecting water, hold on to the second ball with your hand. Fill only 3 hemispheres, Immediately place the ice ball mold flat in the freezer. After removing the product from the freezer. The ice cube mold has a sealed silicone stopper to effectively place liquid leaks, Keep your fridge tidy. Just put lemon slices and fruit pieces in the ice hockey mold, close the lid, pour water from a small mouth, and cover with a silicone stopper, then take the whole mold into the refrigerator to freeze for about 6-7 hours. This ice cube tray can make beautiful DIY fruit ice cubes, it's also an ideal partner for whisky, cocktails, juices, tea, and coffee.