BPA-Free Safe Material: Made of food-grade PE plastic free of BPA, this bowl cover is non-toxic and safe for direct contact with all kinds of food, ideal for daily household cooking and dining use Disposable Use: Shaped like a shower cap, this plastic cover requires no complicated cleaning or maintenance and is designed for single use only. It delivers great sanitation, perfect for baking enthusiasts who frequently make bread and proof dough every day Transparent & Moisture-Locking: The highly transparent design allows you to check dough fermentation progress and food conditions inside the bowl at any time. Premium plastic features excellent water retention, effectively locking in internal humidity to stop dough and food surfaces from drying out and clumping Tight & Flexible Fit: Fits bowls and plates up to 9 inches. Flexible material resists tearing and fits most small tableware. Measure your tableware before buying Application Notes: This product is not heat-resistant. Do not fill it with boiling water or use it in microwaves to avoid plastic damage. It is only suitable for room-temperature scenarios, including dough proofing, refrigerator food storage, outdoor picnics, food pickling and more Can it be used in the microwave? No. Food-grade PE plastic elastic bowl covers cannot be used in microwaves Are they reusable? Plastic shower-cap style covers are for single use only. No cleaning is required; just discard them after use Is it easy to store? Very easy to store. They stretch open when in use and take up minimal space normally Are they easy to clean? No cleaning is needed. They are single-use and meant to be thrown away after use Can these be used for outdoor picnics? Yes. They are perfect for picnics and barbecues. The elastic material fits tightly over bowls and plates to effectively block flies, dust and debris. They are also lightweight and portable for outdoor use Are they easy to stretch? Yes. They feature elastic bands that allow wide stretching. The plastic covers stretch to fit plates up to 11 inches, suitable for small and medium-sized bowls. Gentle stretching helps extend their service life Do they keep bread fresh? Yes. They lock in moisture and block dry air as well as fridge odors. During bulk fermentation, secondary rising and overnight cold proofing, they stop dry crusts from forming on dough and bread surfaces, and prevent bread from drying out during short-term storage