Mobility: rolling table with four wheels, includes two locking wheels. Adjustable Height: from 27.5'' to 35.25'' with locking knob. Bottom shelf: Prefect for store books, office supplies, and small electronic devices. Easy Assembly: quick and easy, all hardwares/tools are included. Dimension: 31.5"W x 15.75"D x 27.5 ~ 35.25"H.