Great build quality
There's a lot of tumblers on the market, more than i thought possible. figured most of them are pretty even in their performance. i bought mine on a well known auction site. the shipping was fast and does the same thing that the costlier competitors do at half the price with the same quality. everything from the packing, logo is better than the science fiction creature brand the everyone seems to love. i live in florida and this is perfect for the heat and humidity when i'm outside.