Part of the Safco Active Collection, the Vum Mobile Workstation was designed with flexible working environments in mind. Durable workstation was built to be both functional and adaptable so it's great for on-the-go or to anchor a home office. It is mobile on four casters (two locking) and features a plastic cup holder and dual worksurfaces. The top adjusts in height 12-1/4" , and the secondary shelf is stationary. Secondary shelf has a convenient hook for personal items. Safco Active products are designed to promote active movement throughout the day in many workplace settings.