Lindsay Simpsonwrote a review of Hydro Flask Flip Straw Lid on November 11, 2014
Familiarity: I've put it through the wringer
If you buy any-sized Hydro Flask specifically http://www.backcountry.com/hydro-flask-32oz.-wide-mouth-water-bottle you have to purchase this straw. It's the perfect accessory. I hydrate more with this top and my 2 yr old daughter loves it too. Plus there's a clever little finger loop that I can hook this bottle to anything using a carabiner.