Underpad size is a fit decision, not an absorbency decision. A 60 x 90 cm pad and a 30 x 36 inch pad are the same size in metric terms, and the real question is which bedding and which transfer routine each one suits. Choosing by size first, and absorbency second, prevents the common error of buying a heavy pad that is too small to stay in place.
Which size underpad fits a facility bed?
Measure the resident's contact area, not just the mattress. A pad should sit under the hips and extend at least a hand-width beyond the resident in each direction, so that movement does not slide the pad out from under the body. A 60 x 90 cm pad suits most standard care beds for a single resident, while chairs, weighing scales and trolleys often need a smaller 30 x 36 inch pad used as a trolley protector.
| Use | Typical size | Reason |
|---|---|---|
| Bed pad under the hips, single resident | 60 x 90 cm | Covers the contact area with overhang |
| Chair or trolley protector | 30 x 36 inch | Matches seat width, easy to swap |
| Double or bariatric bed | Two pads side by side | Wider coverage without a custom size |
| Transfer and repositioning aid | Match the bed pad size | Avoids catching on bed rails |
How does pads per pack change the real cost?
Cost per pad, not cost per pack, is the number that matters. A larger pack at a higher price can still be lower in cost per pad, and a smaller pack of a heavier pad can cost more per use than a lighter pad changed twice. When a facility compares quotes, it should convert every price to cost per pad and then weigh that against how many pads a resident actually uses per day. Once both numbers are on the table, the decision is usually obvious.
Does a heavier pad always mean fewer changes?
No. A heavier pad holds more, but it also takes longer to settle under a resident and may be uncomfortable for someone who is mobile. For a resident who is repositioned frequently, a lighter pad changed on the rota can be more comfortable and no more expensive than a heavy pad used for longer. Absorbency and change frequency have to be assessed together.
How should a facility standardise pad sizes?
Standardise to two sizes and let the task decide. A 60 x 90 cm bed pad and a 30 x 36 inch trolley pad cover the large majority of needs in a long-term care setting, and a two-size standard simplifies ordering and staff training. Additional sizes are usually justified only for bariatric beds or specialist areas, where a custom need is documented.
How do disposable and reusable options compare?
Disposable pads dominate in long-term care because they remove laundering, drying and storage from the routine, and because a soiled pad is discarded at the point of care. Reusable pads make sense in home-care settings where laundry capacity and storage exist, and where the same pad is used for the same chair each day. In a facility, the labour and utility cost of laundering usually outweighs the material saving, which is why the disposable format is the default and the reusable format is the documented exception.
How should pads be stored and rotated?
Store pads flat, away from damp, and rotate stock so the oldest case is opened first. A vacuum-compressed case takes less shelf space, which matters when a facility holds several sizes, but the compressed pack must be opened cleanly so the pads are not creased before use. Date each case as it is opened and work through it before opening the next, because a creased or damp pad can compromise both fit and absorbency even when the pad itself is within date.
How many pads should be kept at the bedside?
Keep a small working stock at the point of care and the bulk of the case in storage. A bedside basket holding one day of pads reduces trips during a change, while a larger pile invites damp and creasing. Restock the basket at the start of each shift rather than as needed, so a change is never delayed by an empty basket. The same discipline keeps stock rotation honest, because the basket is refilled from the oldest open case each time.
What about disposal and waste volume?
A heavier pad that is changed less often produces less waste volume than two lighter pads used for the same interval, which matters where waste collection is contracted by weight. Facilities reviewing both cost and waste usually find the two measures point the same way, which makes the decision easier to defend to a finance team.
Pads for both tasks: the 60 x 90 cm five-layer underpads with SAP, 50 pack and the heavy absorbency 30 x 36 inch underpads. For facility accounts, request the BI 5-pack sample when sterilisation monitoring is also in scope.
Download the free printable compliance log sheet and run the log sheet generator. Ordering for a clinic, lab or care home? Wholesale and multi-site ordering covers case pricing and account setup, and the B2B wholesale collection lists the lines stocked for institutional buyers. For site-specific guidance, ask a sterilization compliance specialist. Reselling? become a distributor.
Related reading
Incontinence supply planner · 60 x 90 cm vs 30 x 36 underpads: pads per pack and cost per pad · Five-layer underpads and SAP absorbency
Frequently Asked Questions
Is 60 x 90 cm the same as 30 x 36 inches?
Yes, they describe the same pad size. A 60 x 90 cm underpad and a 30 x 36 inch underpad are equivalent, so the choice is about the task rather than the measurement system.
What size underpad should a care home stock?
Two sizes cover most needs: 60 x 90 cm for bed use under the hips, and 30 x 36 inch for chairs and trolleys. Extra sizes are usually only needed for bariatric beds.
Does a heavier underpad reduce the number of changes?
Only where the resident is repositioned on a long rota. For frequently repositioned residents, a lighter pad changed more often can be more comfortable and no more expensive per day.
CliniEco Medical is a licensed medical device establishment (MDEL #35334).
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