Need a new Straw?! Crystal Ninja has your back. This straw is 10.5” long and has a diameter of 0.29” outside, and 0.23 inside diameter. These straws are a great length for many different types of drinkware including 16oz, 20oz, 24oz, and 30oz Tumblers mugs. They also work perfectly with the tumblers we sell on our site!