Portable and adjustable through six height levels from 27.5 to 46 inches, this mobile standing desk supports sitting, standing, or working over a treadmill pad. Four lockable rolling wheels move it easily while a large fabric basket uses the space underneath for storage. A rotating cup holder installs on either side, and thickened metal tubes with forked-leg stability keep the 31.5-inch desktop steady with built-in cable holes for tidy cords.