Designed for use with our Weck Juice Jars, these flexible white plastic lids preserve the freshness of juices, smoothies and other foods stored in the refrigerator or freezer. Lids securely fit over 2 1/2" diam. mouth opening of 16.9-oz. and 39.5-oz.-cap. Weck Juice Jars. BPA-free plastic will not react with foods or absorb odors. Recommended particularly for refrigerator and freezer storage Provides a strong seal. Microwavable and dishwasher safe Set of three.