2. SEATING ERGONOMICS The Features of a Good Ergonomic Chair

3. –A chair that will fit everyone comfortably by adjusting to support each person in their working position. –A back that will not hinder movement and has some passive flex. –Soft edges for comfort while moving at the workstation. Soft edges also protect the surrounding worksurfaces. What to Look for in a Good Ergonomic Chair General Features:

4. –Generous and supportive cushion to encourage movement and comfort. –Supportive foam that won’t bottom out causing pressure points. You should try the chair out for a 3-5 days (See Chair Review) for best idea of long term comfort. What to Look for in a Good Ergonomic Chair Lowest Pressure Highest Pressure Bulldog ReclineBulldog Forward Tilt Lowest Highest pressure Pressure Mapping for Comfort General Features:

5. What to Look for in a Good Ergonomic Chair –Adjustments that are easy to do from the seated position, for ADA accessibility. –Adjustment knobs that are intuitive and easy to grip. –Arms (fixed or adjustable) that are recessed to allow the user to get close to the work surface and removable to adapt the chair to different user preferences. –Radiused or soft armpads that do not to constrict blood flow in the wrist. General Features:

6. What to Look for in a Good Ergonomic Chair –Waterfall front seat edge that does not constrict blood flow to the legs. –Synchronized tilt or knee tilt that mimics the body’s movement with tilt lock for resistance. Good ergonomic tilts do not cause the front edge of the chair to rise (which could obstruct circulation to the legs.) General Features:

7. What to Look for in a Good Ergonomic Chair –Tilt tension should be adjusted to the user’s preferred amount. –Pneumatic Height Adjustment for quick ease of adjustment. Cylinder options for different size people - 15” to 22” Adjustable Features:

8. What to Look for in a Good Ergonomic Chair Adjustable Features: –Seat depth adjustment changes the seat depth to accommodate different height users. The seat depth adjustment in conjunction with a soft waterfall edge protects the sensitive area under the user’s knee. Proper positioning with a slight distance between the seat cushion and the user enhances circulation. – The back height adjustment should adjusts 4 inches to cover the full lumbar range of most users. The lumbar support maintains the user’s natural back curvature.

9. What to Look for in a Good Ergonomic Chair –Forward Tilt creates a forward incline of the entire seat and back and allows for recline and lock. –This feature should bring the back of the chair forward while in the incline mode to support the user’s back in the perched position. –The forward tilt feature decreases pressure on the back and pelvis. Adjustable Features:

10. What to Look for in a Good Ergonomic Chair 3-way adjustment - Height, arm support width and rotation (fixed rotation is preferable) 4-way adjustment - Height, arm support width for added clearance on the chair, fixed rotation and pad slide Soft Armpads are preferable to avoid excessive pressure on the wrists. Retrofittability enables an easy upgrade. Adjustable Features:

11. Generous cushions and waterfall edge that encourage movement and circulation What to Look for in a Good Ergonomic Chair A good ergonomic chair should fit users comfortably and support different working positions Adjustment knobs that are intuitive and easy to grip Simple, east-to-reach adjustments (for ADA accessibility.) Arms that are recessed to allow the user to get close to the worksurface. Four-way adjustable arms include height, arm support width, fixed rotation and pad slide. Removable/retrofittable arms that adapt the chair to the users’ preferences and enable easy upgrades. Synchronized tilt that mimics the body’s movement without straining the back. Good ergonomic tilts do not cause the front edge of the chair to rise during recline, ensuring proper circulation to the legs. Tilt tension that adjusts the recline resistance to the user’s preferred amount. Tilt lock that supports the back in the upright position and variable position stop tailors the recline range. Pneumatic seat height adjustment that includes optional cylinder sizes to accommodate different users. Back height adjustment that controls the height of the entire back for lumbar and upper back support. (about 3”-4” covers the full lumbar range.) Forward tilt that creates a forward incline of the seat and back with the ability to recline and lock in this mode. Forward tilt allows the chair to support the body in the position most people assume when typing. Seat depth adjustment that changes the seat depth to accommodate different height users. Five star base and casters that provide stability and mobility. Soft edges on cushions that promote comfort in different seated positions. They also protect surrounding worksurfaces. The chair back that does not hinder arm movement while seated Supportive foam that prevents “bottoming out” and pressure points.

12. Adjustability Is Not a Valuable Investment… Unless the User Knows How to Operate the Chair! Information on “How to Operate Your Knoll Office Chair” can be found in the following places: –Instructional hangtags that ship on every chair. –Knoll Office Seating Operating Instructions are available on the Knoll Web Site (http://www.Knoll.com.) –Knoll Sellers can also provide after-sale personal product instruction.