Buying a more expensive product rarely fixes a leak. Most leaks come from a mismatch between the product and the situation, and there are only a handful of ways that mismatch happens: the wrong capacity, the wrong size, or the wrong style for when the leakage actually occurs. Each one leaves a different clue. This guide is about reading the clue and matching capacity to reality, rather than guessing upward and hoping.
Absorbency is a capacity rating, not a quality rating
"Maximum" or "ultimate" absorbency does not mean a better product. It means a bigger reservoir, which usually also means more bulk, more heat against the skin, and a higher price per piece. Someone with light stress leakage who buys the heaviest product on the shelf will be uncomfortable, more visible under clothing, and no drier than they would have been in something lighter.
Manufacturers describe capacity in two ways. Most use a word scale: light, moderate, heavy, and overnight or maximum. That scale is not standardised between brands, so "heavy" from one maker may sit between two levels from another. Some also publish a measured capacity in millilitres or ounces. Those figures are obtained under laboratory conditions, with the product flat and fully saturated, which is not how anybody wears one. Treat the number as useful for comparing products against each other, not as the volume you will get in real life.
Work out your real output before you buy
Most people misjudge their own volume, and they misjudge it in both directions. A few days of rough observation is worth more than any chart:
- Note the time and rough size of each leak: a few drops, a tablespoon or so, or a full void.
- Note what was happening. Coughing, laughing and lifting point towards stress leakage. A sudden urgent need points towards an overactive bladder. Constant dribbling with no warning points somewhere else again.
- Note how the product felt when you changed it: barely damp, comfortably used, or heavy and close to failing.
That last point is the fastest calibration available. If products are consistently coming off barely damp, the capacity is too high and you are paying for bulk you do not need. If they are consistently heavy and near their limit, step up a level. If they are somewhere in between, the capacity is right, and any leaks you are getting are a fit problem rather than a capacity problem.
Why the leaking is happening matters too, and it is not one single story. Leakage after childbirth and leakage around menopause, for example, have different causes and different fixes. Our article on incontinence after childbirth and around menopause explains why treating them as one problem sends people towards the wrong product.
Reading the leak: four patterns
Wet down the inner thigh, product barely used
This is the classic sign of a poor seal at the leg. The elasticated cuffs are not sitting in the groin crease, so liquid runs along the outside of the absorbent core instead of into it. Almost always a sizing or positioning issue rather than a capacity one, and moving up an absorbency level here makes it worse, because a bulkier product seals less well.
Check first that the leg cuffs are pulled out rather than tucked in. A tucked cuff channels liquid straight out. Then check the size: a garment that is too large cannot grip the leg at all, and one that is too small drags the cuff out of the crease.
Wet at the back or over the waistband, usually at night
This is a positioning problem, and it is overwhelmingly a night-time one. Lying down moves liquid backwards, while most products place the absorbent zone towards the front. Pulling the back of the garment higher, so it sits well above the tailbone, solves a good deal of it. A slight incline at the head of the bed helps some people. If it persists, bed protection under the sheet is a sensible second line, and our guide to disposable underpads covers what to put where.
Product soaked through and heavy
This one genuinely is a capacity issue. The core has done its job and run out of room. Either move up an absorbency level, or change more often, or both. If it only happens overnight, you need a night-specific product rather than simply a heavier daytime one. The design differs, not just the volume.
You feel damp but the product looks dry
Two possibilities. The surface layer may have lost its ability to draw liquid inwards, which happens to reusable garments when detergent residue builds up in the fabric. Or the product may simply be too large, leaving gaps where skin meets wet edges rather than the dry topsheet.
Sizing up is not the same as stepping up absorbency
These two get confused constantly, and it is an expensive confusion. Size is about the circumference of the hips and waist and how well the garment seals against the body. Absorbency is about how much the core can hold. A larger size does not hold more; it fits a larger body, and on a smaller body it will leak more, not less.
So: if the product is failing before it is full, change the size or the style. If it is failing because it is full, change the absorbency. Working out which of those is happening is the single most useful thing you can do. The same distinction applies to bed protection, and the reasoning is set out in more detail in our underpad sizing and absorbency guide.
Booster pads: helpful, until they are not
A booster pad is an extra absorbent insert placed inside the main garment. Used correctly, it adds capacity without adding a size. Used incorrectly, it causes leaks, because a booster that is too wide props the leg cuffs open and creates exactly the gap you were trying to close. A booster should sit inside the cuffs, never over them, and it should not have its own waterproof backing, which would stop liquid reaching the main core at all.
Day and night are different problems
Daytime leakage tends to come in smaller amounts, more often, with movement involved. Night-time leakage tends to mean larger volumes over a longer wear time, lying still, with liquid pooling backwards. A product that works perfectly for one can fail completely at the other, and that is not a fault in the product. Most people end up using two different products rather than one compromise that half works for both.
Protect the skin while you sort the fit out
While you are experimenting, skin is the thing at risk. Prolonged contact with moisture breaks down the skin barrier, and once that starts, everything becomes more painful and more urgent. Clean gently with a pH-balanced cleanser or a purpose-made wipe rather than ordinary soap, pat dry rather than rubbing, and use a barrier product on any skin that is already reddened. Change promptly rather than waiting for a product to reach its stated capacity. A full product is a soaked product, and skin does not care that you got good value out of it.
When leaks are telling you something medical
A sudden change in pattern deserves attention. Leakage that appears out of nowhere, worsens rapidly, or arrives alongside pain, burning, blood, fever or confusion should be raised with a clinician promptly. More generally, new or worsening incontinence is always worth mentioning, because a meaningful share of causes are treatable: urinary infections, constipation pressing on the bladder, side effects of medication, and pelvic floor weakness that often responds well to physiotherapy. Products manage the symptom. They do not address the cause, and it is worth finding out whether the cause can be addressed.
If you would rather browse by capacity than by guesswork, our incontinence pads range is organised by absorbency level.
Common questions
Should I just buy the highest absorbency to be safe?
No. Excess capacity adds bulk and heat without reducing leaks that come from poor fit, and the extra bulk actively makes the leg seal worse. Match capacity to actual output.
How often should a product be changed?
Before it is full, and promptly after any bowel leakage regardless of how full it is. Waiting for saturation is where skin damage starts.
Can I wear two products at once?
Not two full garments. The second one's waterproof backing blocks liquid from reaching the first, and the combined bulk breaks the leg seal. A correctly fitted booster pad inside a single garment is the proper way to add capacity.
Why does the same size fit differently between brands?
Sizing is not standardised across manufacturers, and charts are based on waist or hip measurements taken in different ways. Always check the measurements printed on the specific pack rather than assuming your usual size carries across.
My product feels dry but I am still leaking. What now?
Look at the leg cuffs before anything else. In our experience that is where most unexplained leaks originate, and it costs nothing to check.
