Designed for Originals and Tritan bottles with Spout Lid . DOES NOT FIT ACTIVES SPOUT LID. Two O-Rings are included in the pack. One large O-Ring fits inside the lid while a smaller O-Ring fits in the drinking spout cap. BPA free. (Lid color matches bottle) This O-Ring includes a handy tab, which makes it easier to remove and then put back into place. There is no package tracking.