Walnut Bentwood Bar Stools Mid Century Modern Adjustable Counter Height Black Leather Upholstered W1143P173514Walnut bentwood&faux leather back and seat, metal tapered legs for durability and longevity. Ergonomic Backrest 360 Swivel Bar Stool,Adjustable Height in A Breeze The largest stable base 17. 7 inch; Walnut bentwood&faux leather back and seat Walnut bentwood&faux leather back and seat, Larger size seat width and seat depth,Ergonomic Larger size seat width and seat depth,Ergonomic Backrest The largest stable base 17. 7 inch The largest stable base 17. 7