This is a great addition to the lids for the Titans. The 96 oz Titan I had did not have a straw lid. I had to improvise with a Yeti lid. The design of the lid is fantastic. The only problem is the straw that they sell is only for the smaller Titans. Suggestion, make a straw long enough for the biggest Titan and let people cut it to fit the smaller ones. Also, consider selling the tumbler, both lids and straw as a bundle instead of having to buy the straw lid and straw separately.