The Whiskware Stackable Snack Pack versatile, stackable containers are perfect for on-the-go snacking. Each set comes with three dishwasher-safe jars: 1/3 cup, 1 cup, and 1 cup. Jars can be used on their own, or easily connected to each other with the quick twist Twist 'n' Lock system. Perfect for: fruits, veggies, crackers, mixed nuts, toppings, and more. BPA and phthalate-free; dishwasher and freezer safe.