Complete your ergonomic workstation with a really comfortable chair. While we don't make these chairs, we've tested them all and can say without hesitation that they meet Anthro's requirements for quality and comfort. Basic: This is your basic chair. The seat angles forward and back, and the padded T-arms adjust up and down. The back features separate height and angle adjustments.Super: A few more features to keep you even more comfortable. The seat back is taller than the "Basic" chair; a separate control slides the seat pad front to back; and the t-arms adjust up and down, in and out.Deluxe: Everything but the kitchen sink! All the features of the "Super" chair, plus an even highter seat back with a padded, height-adjustable head rest. The padded T-arms adjust up and down, in and out, and pivot to allow easy access.