Works great & helps the environment! Just make sure u don’t lose the 2 long thin spooly cleaners or silicone tips(best left on). Also don’t go by oz. unless straight cup. It says curved straws r 4 20oz, straight for 30oz cups. That’s why I got 4 of both package. It matters how wide cup is 2. I have a 30oz I thought I’d use the straight 1s but it gets a lot wider so the curve fit fine! Gr8 tho!!