Why good lumbar support matters

Lumbar support is essential for maintaining proper spinal alignment and reducing strain on the lower back, particularly during long periods of sitting.

The spine features three natural curves: cervical (neck), thoracic (mid-back), and lumbar (lower back).

The lumbar curve arches inward towards the abdomen, bears the most weight when sitting and requires targeted support to maintain its healthy “S” shape.

When this natural curve isn’t properly supported, the spine flattens into a “C” shape, placing excessive pressure on the spinal discs and surrounding muscles.

This increases the risk of muscle fatigue, tension and long-term spinal issues such as herniated discs or chronic pain.

While some chairs come with built-in lumbar support, many do not. In these cases, ergonomic cushions and standalone back supports can make a huge difference in improving posture and reducing back strain.

To gain optimum benefit from a lumbar support, the backrest or lumbar pad/support should be positioned along your natural inward curve (i.e. directly above your hips, close to the L4–L5 vertebrae). When the lumbar support is positioned properly, it helps avoid slouching, fatigue and back strain throughout the day.

If your chair has integral lumbar support, sit fully back in the chair and adjust the height and angle of the backrest so the outward curve of the backrest tessellates with the inward lumbar curve of your back. If your chair has an inflatable lumbar cell, start by using the valve to release all of the air pressure and then gradually pump it up until you feel comfortably supported. Avoid pumping up the air cell so much that you have hard pressure pushing against your back.

If the chair backrest doesn’t provide sufficient lumbar support, consider using a lumbar support cushion or posture aid. Posture aids can be particularly useful to provide more pronounced support when sitting in a standard chair with a flatter backrest, if someone has a short-term issue and only needs extra support for a brief period (e.g. for pregnancy-related back discomfort), or for someone who moves around a lot (e.g. when sitting on meeting rooms chairs, or while travelling).

There are lots of sizes, shapes and styles of lumbar support available, including round rolls for pronounced and targeted pressure, D-shaped cushions for broad support, and adjustable/dynamic systems that adapt to movement.

Lumbar rolls are cylinder-shaped cushions and provide localised support to maintain the lumbar curve, making them best suited for those with a pronounced curve.

D-shaped cushions feature a flat side and a curved side (that form a "D" shaped profile). The flat side is designed to sit flush against the back of a chair, with the curved side against your lumbar curve. They provide a broader, more stable surface for (less pronounced) support across the entire lumbar region.

Contoured/winged cushions are moulded to fit the natural anatomy of the back, providing wider support to the lumbar area and sides as they ‘hug the body’. They are useful for those requiring lateral and lumbar support with even pressure.

Adjustable/dynamic support include inflatable or mesh supports designed to accommodate different body shapes and adapt to user movements.

Inflatable lumbar cushions have an air chamber that can be manually inflated to tailor the firmness and depth of support to your precise needs. This makes them superior to a fixed depth of support (i.e. one with no integral adjustment).

Mesh lumbar supports typically feature a curved frame with breathable mesh that promotes airflow and provides gentle, self-adjusting lower back support.

When choosing the appropriate back/lumbar support for you, consider how pronounced your lumbar curve is and opt for designs that can easily be positioned against your specific lumbar curve height. Look for adjustable straps that attach securely to the backrest of the chair. Select supports with enough firmness to maintain shape under pressure and avoid overly thick supports that push you too far forward (and away from the backrest).

Our ergonomics insights page has guidance on posture, workstation set-up, eye health and more.

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