Getting the right size is the single biggest factor in comfort and leak protection. A brief that's too large gaps at the legs and leaks; one that's too small chafes and feels restrictive. Here's how to measure once and get it right.
What you'll need
- A soft measuring tape (a string and a ruler works too)
- 2 minutes — measure over light clothing or underwear
How to measure in 3 steps
- Waist: Wrap the tape around the natural waistline (at or just above the belly button). Keep it snug but not tight — you should fit one finger under the tape.
- Hips: Measure around the widest part of the hips and seat. Keep the tape level all the way around.
- Use the larger number. Most brands size by the larger of your waist or hip measurement. If you're between sizes, size down for pull-ups (they stretch) and follow the chart for tab-style briefs (tabs adjust).
General size chart (adult briefs & pull-ups)
Exact ranges vary slightly by brand — always check the size chart on the product page. This is a reliable starting point for brands like TENA, Attends, Prevail, and Depend:
| Size | Waist/Hip (inches) | Waist/Hip (cm) |
|---|---|---|
| Small | 22–36" | 56–91 cm |
| Medium | 32–44" | 81–112 cm |
| Large | 44–58" | 112–147 cm |
| X-Large | 56–64" | 142–163 cm |
| 2XL / Bariatric | 60–80"+ | 152–203+ cm |
The 4-point fit check
When a new size arrives, check these before committing to a full case:
- Leg cuffs sit in the crease of the leg with no gaps (gaps = leaks).
- Waistband reaches at least hip-bone height and doesn't roll down.
- Tabs (brief-style) close symmetrically, pointing slightly upward, without straining.
- No red marks after an hour of wear — persistent marks mean go up a size.
Choosing absorbency
- Light–Moderate: occasional leaks, active daytime use — liners, pads, or thinner pull-ups.
- Heavy: full bladder loss, daytime — maximum-absorbency pull-ups or tab briefs.
- Overnight: look for products labelled "overnight" with higher capacity and longer wear time — see our overnight guide.
Quick answers
Pull-ups or tab-style briefs? Pull-ups feel like underwear and suit active, independent users. Tab-style briefs are easier for caregivers and better for limited mobility — read our full comparison guide.
Still not sure? Order the smallest pack size of two candidate sizes, run the 4-point fit check, then buy cases of the winner. Or contact us — we're happy to recommend a size and product.