We bought 8 of them back in 2008. We have used them daily and put them in the dishwasher daily.
There are 4 or 5 of them where they have not held up well. When I take them out of the dishwasher
I can hear hissing. They have lost their seal. They still work but not as good as the ones that have
not lost their seal.
Having had the cheap insulated glasses and the genuine Tervis tumblers, I would still buy the Tervis because
they have lasted as long as they have. Even the ones that lost their seal are better than the
cheap ones.
When I bought these, I purchased them directly from Tervis or their shopping site. It was close to
Christmas and they had specials with discounts and free shipping. Mine are just the very plain clear
ones and they still Look good.