Safe material: This ice ball maker is made of food grade silicone and AS material. It is safe, BPA free, hygienic, non-toxic and odorless. The silicone and AS lid closed well at the edges. This allows the ball ice cube mold to remain a perfect sphere after being filled with water instead of falling apart. Easy released design: The bottom of the ice ball maker mold is made of good quality soft silicone material, which makes it easy to release the ice ball. To release the ice ball, you can squeeze the silicone bottom. After taking out from the freezer, it is recommended to let the mold and the ice ball stand for one minute to release. BEAUTIFUL LOOK: This cute candy colored light bulb sphere ice cube mold is a beautiful accent in your freezer. When you take the cute round ice cube mold out of the freezer and take the perfectly shaped ice ball out of it, you will feel that making ice balls is not just a process, but a pleasure. Extra Large Ice Ball Size: This ice ball mold can makes 2.5 inch extra large ice balls, just one of which will keep your drink cold and refreshing for a long time. The large ice ball melts slowly for long-lasting coldness and will not dilute your drink quickly. You can put it in your iced tea, cocktails, whiskey, coffee and enjoy the flavor of your drink. Water filling port and visible water level: The water filling spout at the top allows you to fill the mold without dividing the ice mold in half. The transparent AS lid allows you to see the water level and stop filling in time.