This straw works so well! It fits snugly into the hole on the lid (purchased separately) and even though the fit is snug, it's still very easy to move up and down as needed to get the last drops out- use your hands or your teeth, hehe. Easy to clean and makes me feel greeeeen!
First question I had was wether or not it would actually hold up and be able to puncture the lid. The answer is yes! Fits perfectly and it sturdy enough to hold its own! Perfect balance!