20 Steam microwave cooking bags are a simple and easy way to make cooking Vegetables convenient and healthy Large Size (20*22cm) Easy To Use: Each Package is printed with useful guidelines for cooking timesPackage：20 Large Size Microwave Steam BagsSimply put the food in the cooking bag, pull off the strip and fold over the bag to seal, place the bag in the microwave as directed and cook. Allow bag to stand for 20-30 seconds then serve. When finished simply toss the bag and mess away! Combine your favorite flavors with the nutritional benefits of steam cooking. Bags can be used for fresh and frozen vegetables, chicken, fish and much more .