This Fellowes Mesh Back Support helps to reduce tension associated with extended desk work by gently moulding to your body's contours. This helps in providing uniform support across your entire back & alleviates aches & strains. Suitable for use on most chairs, the tri-tensioning attachment provides a fixed, secure position & the mesh design allows air flow for increased comfort. Fellowes Office Suites Mesh Back Support. Provides stress-free all day comfort. Reduces tension by maintaining the lumbar curve of your lower back. Conforms to your body's contours to provide uniform support. Mesh fabric allows airflow.