NOTE: There are 2 different types of replacement mouthpieces / straws, so please ensure you are purchasing the right one for your drink bottle:
F401 fits Drink Bottles WITH the carry loop on the lid (Designs: Firetruck, Pink Owl, Purple Butterfly)
F400 fits Drink Bottles WITHOUT the carry loop on the lip (Designs: Pink Butterfly, Pink Flowers, Construction, Multi Sports, Plain Pink)
These will ensure your drink bottle will essentially have an indefinite life.
Things to note: