silicone, this mold is and easy to use, making it perfect for creating fun and unique ice cups you have any questions, please us Great for those who love throwing parties or entertaining guests, as well as for families looking to add creativity to their beverages Whether you ' re hosting a barbecue, a birthday party, or just a drink at home, this mold is perfect for adding a touch of fun to any occasion Enjoy your drinks in with the Bear Shape Ice Cup Silicone Mold