Black vinyl fabric mid-back task petite stool with arms, grade 3. All BodyBilt Mid-Back chairs provide exceptional comfort with upper and low back support. 10-Point Posture Control adjustability puts at your command the tools to address and alleviate stressful aches and pains so often escalated by inferior chairs. The moderately contoured seat on this model is our most popular design. With passive weight distribution via surface contact this model encourages proper-seated posture and cushions the high-pressure points that lead to discomfort on flat seat designs. For special needs, an array of optional features is offered to address almost every seated task in the office. The J style mechanism rocks from a center-pivot point under the seat, and allows for the backrest depth adjustment feature. Ergonomic adjustability and comfort are the cornerstones of BodyBilt seating. The J757 features 10-point posture control, which allows the user to control their ergonomic level of comfort. The seat pan is BodyBilt’s contoured seat, designed for the average worker. The J-style mechanism allows for a smooth rocking motion or may be locked in a stationary position. Armrest height, articulation, angle and width adjustment. Black, non-upholstered arm pads (soft, 4" wide). #7 Seat (19" depth x 21" width). Seat height adjustment (5.5" range). Seat tilt adjustment and tension control. Seat slider. 360 degree Swivel. J-style adjustment mechanism (seat pivots from the center of mechanism). Chrome footring w/tall cylinder (7.5" stroke). Black 26" five-star base . Hooded carpet casters.