- Keep Your Ice Bath Tub Cold Longer: The 8 lb ice cube block is large enough for your cold plunge, melts slowly to speed recovery after workouts, reduce muscle soreness, and prep you for effective ice bath recovery. A must-have accessory for any ice bath tub and portable cold plunge tub. - Collapsible Food-Grade Silicone: The ice block mold is collapsible for easy storage and transport. Trapezoidal design, flexible bendable silicone with a polished non-stick surface makes popping out ice blocks simple. Made from 100% food-grade silicone to ensure safety and health, avoiding chemicals in your water or skin irritation. These large ice trays can also be used for coolers, soap molds, beach trips, camping, hunting, BBQ, fishing, and more. - Thickened Silicone Mold With The Lids: The lid prevents water spills during freezing, and the thickened silicone provides sturdy support to hold its shape as the water freezes. They won’t deform or break when bearing the weight of the massive ice loaf, ensuring durability. Unlike small and flimsy bread pans, plastic ice cube trays, and zip bags that break, this reusable extra large ice mold saves time, money, and energy. - Sustainable, Convenient and Cost-Effective: This huge ice cube mold is reusable and an affordable ice maker tool that reduces the need to buy ice for your cold bath tub. Perfect size and easy to stock in your freezer. No annoying lids to deal with. Just fill water into the ice tray and freeze for about 12–24 hours. Dishwasher safe. These giant ice block molds will pay for themselves over time.