When using regular straws, storing the straw in PET bottles requires the user to fold the straw in order to fit it in. As a result, the user would have to reach into the bottle with their fingers to get the straw out, which is unhygienic. Flexible Straw offers a solution to this problem. The design directly changes the shape of straws used today, so that users will not need to use or bring additional equipment. A spring is incorporated where the bending spot of a regular straw usually is. By combining the spring with the straw, the spring can flex according to its condition. Therefore the name Flexible Straw was born. In other words, when closing the bottle, the spring will flex on its own, allowing the straw to stay in the bottle. When the cap is removed, the straw would spring back up to its original and drinkable height.