Quick answer

For reliable bed protection, choose disposable underpads with a superabsorbent polymer core and a non-liquid permeable backsheet. Size and absorbency should match the user's mobility and incontinence level.

Why absorbency and size matter most

The primary job of a disposable underpad is to keep the bed dry and protect the mattress. Absorbency is determined by the core material—superabsorbent polymer (SAP) pads lock fluid away faster and control odor better than basic cellulose pads. Size also matters: a larger underpad (e.g., 30 x 36 inches) covers more surface area, reducing the chance of leakage during repositioning or overnight use.

For bedridden individuals who are turned or repositioned frequently, a wider pad helps prevent side leaks. For lighter incontinence or shorter-term use, a smaller pad may suffice and cost less per unit.

Material and comfort trade-offs

Disposable underpads vary in top sheet and backsheet materials. A soft, air-permeable top sheet reduces friction and sheer, which is important for fragile skin. Some pads are designed to work with low air loss mattresses, allowing airflow while still containing fluid. The backsheet should be non-liquid permeable to protect the mattress but may feel less breathable against the skin.

The trade-off: softer, more breathable materials often cost more per pad. If the user is fully bedridden and immobile, comfort and skin protection are higher priorities. For short-term or mobile users, a basic pad may be adequate.

Decision rules for choosing disposable underpads

  • Assess incontinence level: Light incontinence: choose a standard absorbency pad. Heavy or overnight incontinence: choose a pad with a superabsorbent polymer core, like the Ultrasorbs Premium Underpads 30 x 36 EXTRABULK3036.
  • Match size to user mobility: Bedridden users who are repositioned often need a larger pad (30 x 36 inches or bigger) to cover the full width of the bed. Mobile users who only need protection during sleep can use a smaller pad (23 x 36 inches). Measure the bed width and choose a pad that extends at least 6 inches beyond the user's hips on each side.
  • Consider mattress type: If using a low air loss or specialty support surface, choose an air-permeable underpad. Check the product description for compatibility. The Ultrasorbs Premium Underpads are explicitly designed for this purpose. Using a non-breathable pad on an air loss mattress can damage the mattress and reduce its effectiveness.
  • Balance cost vs. frequency of change: Extra bulk underpads (like the Ultrasorbs) cost more per pad but need fewer changes, lowering total daily cost for heavy incontinence. Standard pads are cheaper per unit but may need changing every 2-4 hours. Calculate total daily cost: (cost per pad) x (pads per day). A more absorbent pad may be cheaper overall.

Product highlights

  • Ultrasorbs Premium Underpads 30 x 36 EXTRABULK3036: Superabsorbent polymer core wicks away and absorbs fluid to help protect patient or resident skin while controlling odors. This means fewer changes and less odor, especially important for overnight use or for users with heavy incontinence.

    Ultrasorbs Premium Underpads 30 x 36 EXTRABULK3036

    Ultrasorbs Premium Underpads 30 x 36 EXTRABULK3036

  • Ultrasorbs Premium Underpads 30 x 36 EXTRABULK3036: Air-permeable materials for use on low air loss mattresses and specialty support surfaces. If your facility or home uses a low air loss mattress, this pad won't block airflow, helping maintain skin integrity.

  • Ultrasorbs Premium Underpads 30 x 36 EXTRABULK3036: Non-liquid permeable backsheet protects underlying surfaces and helps keep them dry. The mattress stays dry, reducing the need for frequent mattress cleaning and extending mattress life.

Who should choose what

Best for

  • Bedridden individuals with heavy or overnight incontinence
  • Care facilities using low air loss mattresses
  • Users who prioritize skin protection and odor control

Not ideal for

  • Mobile users who only need occasional protection (a smaller, less expensive pad may be more economical)
  • Users with very light incontinence who change pads frequently (a standard absorbency pad will suffice)