The popcorn bowl is made of food grade siliconel. It is environmentally friendly and high temperature resistant. It is suitable for oven and microwave oven. Have it ready in just 2 or 3 minutes, you can have your delicious popcorn from the convenience of your home or office using only your microwave. Excellent for movie nights and parties! This popper is collapsible, so you can store it basically anywhere in your kitchen. The width from left handle to right handle is 9 1/2 inches and the inner diameter is 7 9/10 inches. The original height is 5 7/10 inches, and the folded height is 2 4/5 inches. It saves space for storage after folding. Perfect for traveling and a great space saver for college dorms.