The 2-step spring is a game-changer—I can flip the spout up with one hand while driving and it stays put. Even after a month of daily shakes, the silicone hasn't warped or gotten that gross kink my old straws did.
Kevin★★★★★
The flexible silicone spring is the standout part for me—the straw stays put in the bottle and folds down when I close the lid, so no more losing it in the sink. The spout sits at a perfect angle that makes sipping while driving actually comfortable.
Adam T.★★★★★
The flexible silicone spring makes it so easy to snap the bottle shut without fishing the straw out first, and the spout sits at a perfect angle for sipping while driving. I've already ordered a second one for my other bottle.