Review on Convenient and Versatile Oz Microwavable Translucent Plastic Container Pack 9 by Eric Pavelko

I am a crafter and use these to store extra fine glitter, sequins and polymer clay pieces. I find this to be the most convenient size for my items, especially when storing. Since my use doesn't require fluids I'm not sure how effective they are in that area but I roughly open and close these things a few times a week and I've been doing this for 6 months and they haven't bent, broken , seal lost or something has leaked. In addition, these things have been dropped several times, even when in a heavy condition, and have been of the same quality from the first use to this day.