Unlock endless chill with our extra large 5 lb. Ice Block Molds: premium silicone for bigger, longer-lasting ice. Heavy-Duty Design: Crafted from thick, resilient silicone with wavy edges for stability, ensuring easy ice block release and enduring performance. Ideal for our Pop-up: Enhance your pop-up plunge experience with large ice blocks that keep your plunge cooler, longer. Economical & Convenient: Forget buying ice; make your own with our reusable, dishwasher-safe molds, saving time and money. Outer Dimensions: 11 5/8" x 6 1/2" x 4 1/2". These units are designed to nest.