The SH-21 square collapsible cup is made from food-grade silicone, ensuring safety, durability, and resistance to high and low temperatures. With a large 610ML capacity, it meets your hydration needs for longer periods. Its unique square design saves space when folded, making it easy to carry, perfect for travel, camping, fitness, and daily use. Featuring a leak-proof seal, it provides a hassle-free experience. Reusable and eco-friendly, it's the ideal hydration companion for modern lifestyles!