I've been trying to get away from single use plastic bags and these storage boxes are superior in every way. Completely air tight, easy to see contents and dishwasher safe. Handy space on the lid to write in a date or note about contents. I now have several in different sizes and will likely get more. The plastic cheese storage bags are hard to seal and can get tears as well as being tedious to wash and dry between uses. It feels great to reuse these storage boxes and this about the many plastic bags I am *not* using. I plan to give these as gifts, too. The planet and I thank you.