Review on 100 Sets of 16 oz Clear Plastic Cups with Straw-Slot Lid - Premium Disposable PET Crystal Clear Cups with Lids by Cody Hinckley

I am an elementary school art teacher and use these to control the yarn for our fiber block. Of the 100 mugs I ordered, maybe 85-90% could withstand daily use by my students in grades 2-4. Not a bad buy, but I'd love to find something that could be a permanent solution to the yarn dilemma! This year they did their job, I just need to buy more next year. The breaking of the lids when pulling the yarn was a minor issue, and the quality control of the product shipped. Some of the lids are glued together and I'm not sure I have a full set of 100 to start with. We also found the lids to be fairly easy to remove. Only 2 out of 100 cups broke themselves.