Your Ultimate or Ultimate Free (as of model year 2023) is now even more practical because the Ultimate Bottle Cage Mount allows you to attach additional bottle holders to the outer sides of the bag. The connecting piece supports holders for bottles containing up to 0.75 L and is also compatible for upgrading an Ultimate Free 6.5 L or older Ultimate Classic versions with 7 L.Its quite easy to check whether you can upgrade your Ultimate with the Bottle Cage Mount yourself. Look inside the bag, if your PE base reinforcement has a punched hole on either side, you can carry out the upgrade with this adapter yourself.