I have bought Tervis products for over 20 years and the last order is the end of my business! I bought a mug and three straw lids. NONE of the straw lids fit. In fact, we thought we were going to have to break off the lid from the tumbler. The total cost of those lids was $10. When I called to get a refund, they said I would have to pay the postage to return the lids. Of course this was silly since the postage would cost more than the ill-fitting lids. DON'T BE FOOLED BY THEIR "GUARANTEE", THEY DO NOT BACK THEIR PRODUCTS!