1. 16 LBS Extra Large Ice BlockThe 2Pack 16 LBS Ice Cubes is big enough cool the Plunge Lab perfectly for extended periods,melt slowly,speeding up your recovery time post workouts, reducing muscle soreness,get ready for unmatched ice bath recovery! If you have this extra large ice block mold, you don't have to go to the supermarket to buy ice cubes.You can make your own extra large ice cubes at home, saving you time, energy and money. Alternative to countertop ice maker 2. Thickened Silicone Material DesignCompared with other ice cube boxes, we improved the design with thickened silicone material and side reinforcement design, which is not easy to deform and increase the stability when filling water. Easy to remove ice cubes without bending or using other tools. Reusable and easy to clean, dishwasher 3. Silicone Material food grade silicone material ensures and , will not release any chemicals into the water, will not irritate your skin and pollute the environment. And you don't have to worry that the ice cubes will be stinky during the production because we have equipped you with a lid. The lid also prevents items in the zer from zing with the ice cubes 4. Easy to MakeIt's very easy to use, just fill the silicone molds with water, leave some space at the top to allow for expansion, and place them in the zer for 24 hours. Once the ice cubes are completely frozen, take them out of the zer and let them sit for 5-10 minutes, the ice cubes will pop out easily and you will have perfectly large ice cube