LumiSource Swift Hydraulic Task Chair, Black: * Swivels 360 degrees * Seat height adjusts hydraulically from 17"-22" * 5 durable wheels for mobility * Easy to assemble * Padded seat and backrest * Sleek contemporary styling * Chrome-plated metal frame and base * Dimensions: 19.5"L x 17"W x 29"-34.25"H * 90-day warranty * Model# CHR-TW-SWIFT BK