With its removable foam sleeve and specially designed bracket, the Self-Leveling Cup Holder can adapt to variety of drink sizes and mounting locations. Designed to mount to the UniTrack rail under the armrest, along the seat, or on the backrest, it can also mount to the PS armrest. For the VS, VS Jr and Corpus Tilt, the standard mounting location is along the sides of the seat; however, a custom armrest mount is available.