I bought these on Amazon after visiting a resort in Costa Rica that strictly used bamboo straws. I was fed up with the paper ones disintegrating in my drink and the metal ones hurting my sensitive teeth. I highly recommend these, they even come with a little pipe cleaner to really clean each one. And you can even put them in the dishwasher! The only reason why I wouldn't give these a five star review is because they are a little bit larger in circumference at the bottom, and they don't fit in all of my reusable tumblers.