Don't waste your money on these worthless trays
If you order these trays I suggest you order TWO sets in an effort to get ONE set to come out ok.  I followed the instructions exactly, when the first tray came out of the hot water it immediately collapsed on itself and there was now way to get it to come apart.  The second tray (I held in the water only five seconds) but it was so flimsy it wouldn't hold its shape to allow me to get it into my mouth despite using three fingers to support the back of the tray.  So I failed in two out of two attempts.  Don't waste your money....
Rating: 1 stars