Pressure-Relief Cushions and Mattress Overlays: Preventing Bedsores

Anyone who spends long stretches of time in a bed or wheelchair is at increased risk of pressure injuries, sometimes called bedsores or pressure ulcers. These develop when sustained pressure cuts off blood flow to the skin and underlying tissue, usually over bony areas like the tailbone, hips, heels, and shoulder blades. The good news is that the right cushioning and mattress support, combined with good positioning habits, can meaningfully reduce that risk.

This guide walks through the main categories of pressure-relief products available for beds and wheelchairs, what the evidence says about prevention, and how caregivers and patients can make an informed choice about what fits their situation.

Understanding Pressure Injuries

Pressure injuries form gradually, often starting as a reddened area of skin that doesn’t fade when pressed. Left unaddressed, they can progress to broken skin and deeper tissue damage over the course of days. People who are largely immobile, use a wheelchair for most of the day, have reduced sensation, or have limited nutrition are at the highest risk, which is why redistributing pressure and encouraging regular position changes are two of the most consistently recommended prevention strategies. According to MedlinePlus, the National Library of Medicine’s patient information service, shifting weight at least every two hours in bed and every 15 to 20 minutes in a wheelchair, along with checking skin daily, are core habits for preventing pressure injuries before they start.

Common Warning Signs

• Skin that stays red, purple, or darker than surrounding tissue after pressure is relieved.
• Areas that feel warmer, cooler, firmer, or softer than the skin around them.
• Any blister, open area, or break in the skin over a bony area.
• Persistent pain or tenderness at a pressure point, even without visible skin changes.

Mattress Overlays for Bed-Bound Care

A mattress overlay is a supportive layer placed on top of an existing mattress to add pressure redistribution without replacing the whole mattress. Options range from foam overlays that contour to the body, to gel layers that help manage heat and moisture, to alternating-air overlays that use a pump to shift pressure points automatically throughout the day and night. Alternating-air systems can be especially useful for someone who is unable to reposition themselves at all, since the surface itself does some of the pressure-shifting work between manual repositioning. The right choice depends on how much time someone spends in bed and their individual risk level. Browse our mattress overlays to compare foam, gel, and air options.

Wheelchair Cushions and Accessories

For anyone who uses a wheelchair for extended periods, a supportive cushion is just as important as mattress support at night. Cushions are generally built from foam, gel, air cells, or a combination, each offering a different balance of pressure redistribution, stability, and weight.

• Foam cushions are lightweight and affordable, and work well for people at lower risk who need general comfort and support.
• Gel cushions add cooling and pressure distribution, often a good middle-ground option, though they tend to be heavier than foam alone.
• Air cell cushions offer the highest level of pressure redistribution for higher-risk users, but require regular checking of air pressure to stay effective.

A cushion that’s too soft can allow the user to “bottom out,” pressing through to the wheelchair frame underneath, while one that’s too firm may not relieve pressure effectively at all. Our wheelchair accessories category includes cushions and other add-ons that support all-day comfort and skin protection, and pairs well with our wheelchairs selection if you’re also comparing chair frames.

Choosing the Right Mattress

For those spending most of the day and night in bed, the base mattress itself matters as much as any overlay. Pressure-redistributing mattresses are built with foam, gel, or air chambers designed to spread body weight more evenly than a standard mattress, reducing the concentration of pressure over bony areas. Look at weight capacity, whether the surface supports repositioning, and how easily it can be cleaned, especially if incontinence is also a factor. Explore our mattresses to find an option suited to a caregiving or long-term recovery setting.

Prevention Habits That Help

• Reposition in bed or in a wheelchair on a regular schedule, even with supportive surfaces in place.
• Check skin daily, especially over the tailbone, hips, heels, and elbows, for redness or changes, using a mirror or asking a caregiver to check hard-to-see spots.
• Keep skin clean and dry, since moisture from sweat or incontinence can make skin more vulnerable to breakdown.
• Choose bedding and clothing that minimizes friction and wrinkling under the body.
• Maintain good nutrition and hydration, both of which support skin health and healing.
• Avoid dragging a person across sheets during repositioning, which can create friction injuries in addition to pressure damage; a proper transfer or repositioning technique reduces shear force on the skin.

Frequently Asked Questions

How often should someone be repositioned?

General guidance suggests roughly every two hours in bed and every 15 to 20 minutes while sitting in a wheelchair, though the right interval can vary based on individual risk factors, skin condition, and the support surface being used, which is why a clinician’s input matters for anyone at elevated risk.

Can a cushion or overlay alone prevent pressure injuries?

Support surfaces reduce risk but don’t eliminate it on their own. They work best as part of a broader routine that includes repositioning, skin checks, and attention to nutrition and moisture.

Is a firmer or softer surface better?

Neither extreme is ideal. The goal is a surface that distributes weight evenly without allowing the body to sink through to a hard surface underneath, which is why product weight ratings and individual body shape both matter when choosing.

When to Talk to a Professional

A wound care nurse, physical therapist, or physician can assess individual risk factors and recommend a specific pressure-relief strategy, especially for anyone who already has a reddened area, a wound, or a diagnosed pressure injury. They can also help determine the right cushion or mattress type based on weight, mobility, and skin condition.

Shop the category: see our mattress overlays, wheelchair accessories, wheelchairs, and mattresses for pressure-relief options.

This guide is educational and general in nature. It isn’t medical advice — talk with a doctor or physical therapist about what’s right for your specific situation.