NECESSITY FOR THE HOME & OFFICE - Sitting in a chair without proper support can cause back discomfort, poor circulation, overall fatigue and long term issues which is why a using a Fellowes office chair back support is a necessity in any office or home environment ADDITIONAL COMFORT - It's ergonomic design incorporates two wings which move independently to mould to your back with vents to promote airflow HEIGHT ADJUSTABLE - This office chair back support is height adjustable to maximise comfort to 7 different settings (from 14cm in the lowest setting to 23cm on the highest) EASY TO ATTACH - The Back Angel back support can be easily attached with its elastic strap, which fits most chairs FIRA ACCREDITED - Tested by FIRA International Ltd to comply with the ergonomic requirements set out in European Health and Safety Legislation: EN ISO 9241-5 WARRANTY - This office chair back support comes with a 5-year warranty and access to top quality customer support to help with any queries A few e