Food-Grade Silicone Material -- These large ice molds are made with high quality food grade silicone, durable, reusable and dishwasher safe. The silcone ice mold is soft and has a reinforced design on the sides to ensure the stability and shape integrity of the ice cube, so it is easy to mold and release. Big Size Ice Mold for Ice Bath Tub - With big size ice cubes made by our large ice block molds, you can keep your cold plunge chiller for longer, no need to add ice cubes frequently. You can enjoy your relaxing time well. And large size ice packs are also good for camping, fishing or short trips, to keep food fresh longer lasting. Save Time and Money -- With our large silicone ice molds, you can make your own large ice cubes at home, each mold can make up to 2.3lbs ice cube, you can make up to 12lbs ice cubes at a time with our ice molds set (you will get 5pcs ice molds). No need to buy ice packs from shop or supermarket, save you a lot of time, energy and money. Easy to Use -- Fill the ice mold with water and please leave some space at the top to allow for expansion, then place the mold in the freezer for 24 hours, once the ice cube is completely frozen, take the mold out of the freezer and demold after it sits for a while, the ice cube can be released very easily. Multiple Use -- Our large ice molds are not only suitable for making ice cubes for ice bath tub, but also can be used as cake mold, baker molds etc. The silicome material is high quality food grade and safe to make food.