Food-Grade Safe & Durable Use: Made of premium thickened food‑grade PE material,these plastic bowl covers are safe for direct food contact. Tear‑resistant film ensures stable daily kitchen use. Ideal for Sourdough Proofing: Designed with moisture‑locking function,these sourdough covers for proofing maintain proper humidity for dough fermentation,preventing sourdough from drying out and cracking for bread baking. Precise Elastic Size & Wide Fit: These plastic food covers stretch flat up to 16.5 inches,fitting bowls with diameter up to 9.4 inches. The stretchable elastic edge creates a snug seal to keep food fresh and dust‑free. 3‑Step Easy to Use: Simply place,stretch and store for quick coverage. The elastic bowl covers are a substitute for cling film and foil,widely used for bread proofing,leftovers,fruits,salads and fridge storage. Durable & 200‑Pack Value: Thickened tear‑resistant film offers sturdy performance for single‑use. 200‑pack bowl covers elastic provides ample supply for daily kitchen needs,simplifying post‑meal cleanup..