If you are sitting for long periods of time, you may be prone to pressure sores and ulcers. A firm, low-profile foam cushion may not be the best option for users with existing sores or a history of ulcers. Choosing a cushion that matches your risk of skin breakdown is essential.

Some cushions are designed to be perfectly flat. While these cushions do provide additional comfort, they do not provide the postural support and stability of a contoured cushion. Choosing a cushion with the right positioning properties will help support your spine and prevent deformity.

Standard cushion covers can be made from a variety of breathable materials, while incontinence cushions are waterproof and can be easily cleaned in order to protect your cushion from bodily fluids and other sources of moisture.

High-profile cushions conform to the user more effectively and generally provide more support and protection against skin breakdown, but can also significantly add to the chair's seat-to-floor height.