As a general rule, most men should replace their everyday underwear roughly every 6 to 12 months, and sooner if a pair shows clear signs of wear. The exact timing depends on how many pairs you own, how often you wear each one and how you wash them, so the smartest approach is to watch for the signs rather than follow a strict calendar.
Why underwear doesn't last forever
Underwear works harder than almost anything else in your wardrobe. You wear it all day, it stretches every time you move, and it goes through the wash far more often than a shirt or a pair of jeans. Over time that adds up:
- Elastic loses its snap. Waistbands and leg openings slowly relax, so the fit gets looser.
- Fabric thins out. Repeated washing and friction wear the fibres down, especially in the seat and pouch.
- Shape and colour fade. Pairs that once looked sharp start to sag, pill or turn dull.
- Freshness drops. Older fabric can hold on to odours even after a proper wash.
None of this happens overnight, which is exactly why it's easy to keep wearing a pair long after it has stopped doing its job.
7 signs it's time to replace a pair
Do a quick drawer check every few months. If a pair ticks one or more of these boxes, it's ready to go:
- The waistband rolls, folds or slides down during the day.
- The leg openings ride up or feel loose and wavy.
- Holes, fraying or loose seams appear anywhere, even small ones.
- The fabric looks see-through in places where it didn't used to (mesh styles excepted, of course).
- Pilling or rough patches make it less comfortable against the skin.
- Stains or odours that don't come out in the wash.
- The pouch has lost its shape and no longer gives the support it used to.
A useful rule: if you'd feel slightly embarrassed being seen in it, it's time for a new pair.
How long different styles and fabrics typically last
Lifespan varies with fabric, cut and how often a pair is in rotation. These are rough guidelines for pairs worn about once a week:
| Style or fabric | What wears out first | Typical refresh window |
|---|---|---|
| Cotton briefs and trunks | Waistband elastic, fabric thinning | 6 to 12 months |
| Modal / ice silk trunks | Pilling if tumble-dried hot | 6 to 12 months with gentle care |
| Mesh boxer briefs and underwear | Snags on zips, velcro or rough surfaces | 6 to 12 months |
| Jockstraps | Straps and waistband stretching | 6 to 9 months if worn for training |
| Thongs and G-strings | Thin straps losing tension | 6 to 9 months |
Want to compare fabrics in more detail? Read our guide Mesh vs Cotton vs Modal: Which Men's Underwear Fabric Is Best?
How many pairs should you own?
The more pairs you rotate, the less often each one is worn and washed, and the longer your whole drawer lasts. A practical setup looks like this:
- Minimum: 7 to 10 everyday pairs, so you're never waiting on laundry.
- Comfortable: 12 to 15 pairs, including a few styles for specific jobs.
- Extras: 2 to 4 pairs for the gym, such as a breathable jockstrap, plus a couple of special-occasion styles.
Replacing a few pairs at a time, rather than the whole drawer at once, keeps things fresh without a big clear-out every year.
How to make your underwear last longer
Good care can add months to every pair. Always check the care label first, then follow these simple habits:
- Wash cool. A gentle 30°C (86°F) cycle is kind to elastic and colours.
- Use a laundry bag for mesh, jockstraps and thongs so straps don't tangle or snag.
- Skip the fabric softener. It can coat fibres and reduce stretch over time.
- Air-dry when you can. High dryer heat is one of the fastest ways to tire out elastic.
- Wash colours together and turn bright pairs inside out to keep them vivid.
- Rotate evenly instead of wearing the same two favourites over and over.
When a new pair is a chance to upgrade
Replacing worn-out underwear is also a good moment to rethink what you actually like wearing. If your old pairs always rode up, a different cut might suit you better. Our guide Briefs vs Trunks vs Boxer Briefs walks through the differences. And if your old favourites felt too loose or too tight, check the men's underwear size guide before you reorder.
A few ideas when you refresh your drawer:
- Swap tired cotton pairs for mesh underwear if you want more airflow.
- Try ice silk underwear for a smooth, lightweight feel.
- Add a couple of boxer briefs and trunks for everyday coverage.
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Frequently asked questions
How often should men replace their underwear?
Roughly every 6 to 12 months for everyday pairs, or as soon as you see loose elastic, holes, thinning fabric or lingering odours.
Is it okay to keep underwear for years?
A pair that's rarely worn can last longer, but most everyday pairs lose their fit and shape well before the two-year mark. Let the condition of the pair decide, not its age.
Do gym and sports underwear need replacing more often?
Usually, yes. Pairs worn for training are washed more often and stretched harder, so check jockstraps and workout pairs every few months.
What's the easiest way to make underwear last longer?
Wash cool, air-dry, use a laundry bag for delicate styles and rotate enough pairs so no single pair is worn too often.
Refresh your drawer
If your drawer is due for an update, start with our best sellers or browse the new arrivals for fresh styles and colours. Every order ships in discreet packaging.
