High-Quality Material: The foldable lunch box is made of food-grade silicone, easy to clean and nothing will stick to the silicone. Space Saving: Simply flatten the empty container to take up very little space in your backpack or cupboard. Microwave Safe: This food-grade silicone food storage box is microwave safe. Note: Remove the lid or pull up the air vent valves on the lid when heating. Easy to Carry: These collapsible food storage containers are lightweight and easy to carry when traveling, hiking, or carrying food on a plane. Wide Range of Uses: This foldable silicone lunch box can be used for food storage, lunch boxes, picnics, travel, hiking, camping, and other outdoor activities. It is also suitable for storing dry or wet food such as nuts, leftovers, fruits, etc. Notice: 1. Actual color may be slightly different from the image due to different lighting conditions. 2. Please allow 1-3 cm deviation due to manual measurement. Material: Silicone Capacity: 350ml / 500ml / 800ml / 1200ml Size: 350ml: Unfolded: 132 x 97 x 65mm, Folded: 132 x 97 x 30mm 500ml: Unfolded: 160 x 110 x 65mm, Folded: 165 x 110 x 30mm 800ml: Unfolded: 190 x 121 x 69mm, Folded: 190 x 121 x 30mm 1200ml: Unfolded: 220 x 145 x 75mm, Folded: 220 x 145 x 30mm