OMG, I am so happy with this purchase, I have been wanting some glass containers for the longest time. When I saw them on sale I just had to get them! I have already used them in the dishwasher and it worked great. I took left over food for lunch and it had no problem warming up. The one downfall is that they are not great for stacking in cabinets. They tend to sit together and can get stuck. I chipped one of them because of this. However, that is my only downfall. Overall I really like these.