Blue FreshPro Series Easy Seal Covers paired with FreshPro containers are designed to ensure extra freshness of any food items stored in them. Designed to fit 11. 4Ltr and 17. 2Ltr FreshPro food storage containers, the Easy Seal Cover fits tightly and protects contents from cross contamination, while offering shelf-life extension of ingredients. Easy to put on and take off, the Easy Seal Cover goes on in seconds but stays firmly in place to prevent spills. And once used, the cover is safe to clean in the dishwasher - a great way to save a bit of time.