A classic vertical mount adjustable drink holder in black. ITC patented the design in the 1980s (patent #4,828,211) and it's still a popular choice. The adjustable arms slide out to hold anything from slim cans to large insulated tumblers securely.
A metal spine reinforces the holder and keeps the arms firmly engaged. When not in use it folds closed to just 3/4in.
Housing: plastic (black)
Patented adjustable arm design (Patent #4,828,211)