Elastic Cord Design: These bowl covers for bread proofing come with an elastic cord on the bottom to fit tightly over bowls and plates of different sizes | Shower Caps for Sourdough Bread: The plastic covers for bowls help keep the dough at the right moisture level, prevent the crust from drying out, and create a suitable environment for the dough to ferment | Reusable: These bowl covers reusable are made of high quality plastic material, thick and not easy to tear, after use just rinse it off and use it again | Easy to Use: The elastic bowl covers can be quickly put on the bowl or plate and can be easily removed, a great alternative to regular plastic wrap and tinfoil plastic wrap | Versatile Use: These reusable bowl covers are perfect for bread proofing, for keeping fresh food or fruit fresh, or for preserving food in the refrigerator and microwave oven