... Food Storage Container 1. PP 2. 4-side lock, airtight 3. use for microwave 4. SGS, FDA, LFGB Easylock 700mL Square ... Plastic Food Storage container1. Materal: PP2. Feature: eco-friedly, 4-side lock, freshness preservation, suitable for refrigerator and microwave oven3. Capacity ... Lock&Lock, Tupperware with more favorable pricePicture: Airtight lockage4-side of locking system of lock and lock makes it ...