Review on 🥤 18 oz Clear Acrylic Tumbler Cups with Straws - 8 Pack of Skinny Cups by Sean Maples

I was looking for economical double wall mugs for making snow globe mugs and was very happy to find them, especially after reading all the great reviews. I bought one transparent package on March 9th and the other on March 23rd. I started my snow globe projects a little later than June and was very happy with my first roly-poly. After making a few more, I noticed that the cups were oily (after sealing them with epoxy on the bottom). I stood all six snow globe jars right side up for a couple of days, then felt around the bottom to see if the leak was from my own sealing work. When it didn't I turned it over, checked a few days later and sure enough, 4 out of 6 glasses were leaking from a tiny seam at the top of the cup. I went ahead and drilled small holes. the remaining 10 jars on the floor, filled them with water and left them for a few days to see if there were any defects. A few days later I went to check them out and 90% of them leak under the gasket to the top of the cup. I'm very disappointed in them, especially as I'm well over the window now to return. I have to either throw them all away or seal them myself as best I can :/