Period underwear has gone from novelty to normal in a few years, and most of what is written about it is either a sales pitch or a horror story. This is neither. It is the comparison we would want if we were deciding for ourselves — including the days when pads still win.
How period underwear works
The gusset has thin layers sewn into it: a top layer that pulls moisture off the skin, an absorbent core that holds it, and a leakproof barrier that stops anything reaching your clothes. You wear it like ordinary underwear, rinse it, wash it at 30°C with your normal laundry, and wear it again. Built properly, a pair lasts 100+ washes.
It is the same construction as leakproof underwear for bladder leaks — the two products are, in most brands, the same garment with different marketing.
Side by side
| Period underwear | Disposable pads | |
|---|---|---|
| Feels like | Normal underwear | A pad |
| Shows under clothes | No — layers are sewn in flat | Often, under thin fabric |
| Noise | None | Crinkle |
| Moves during the day | No | Can bunch or shift |
| Heavy days | Backup with your usual protection | Yes, with frequent changes |
| Overnight | Moderate flow only | Yes |
| Cost | Once, then washing | Every month, forever |
| Waste | None | Pad and wrapper each time |
| Chafing and irritation | Rare — soft fabric | Common on long days |
| Changing in public | Carry a spare in a small bag | Easy |
Where period underwear wins
- Light and moderate days. One pair, all day, nothing to think about. This is most of most cycles.
- The day before and the day after. The “is it here yet” days when a pad feels like overkill and no protection feels like a gamble.
- Comfort. No adhesive, no plastic, no bunching, no wing rubbing the inside of your thigh.
- Under leggings, sport, sleep. Nothing to shift or show.
- Cost over a year. Once you own three pairs, the monthly pad bill mostly disappears.
Where pads still win
- Very heavy days. Everyday period underwear has a limit. Our own brief is dry to the touch at 12ml, locked in at 22ml and still sealed at 40ml — solid for moderate flow, not enough on its own for a heavy day. On those days wear it as a backup under your usual pad or cup, and enjoy the extra safety net.
- Long days away from home. If you cannot change or rinse, a pad you can bin is simpler.
- The first cycle, until you know your flow. Wear both until you trust it.
The honest answer on “is it hygienic?”
Yes. The moisture is locked inside the core, away from air and away from your skin. Rinse in cold water after wearing, machine wash at 30°C, hang to dry inside out — the same routine as any underwear that has been through a period. Skip fabric softener, which coats the fibres and stops the core absorbing. Wash a new pair once before you wear it; absorbency reaches full strength after two or three washes.
What we sell, and what it's for
The Calm Wear Women's Leakproof Brief is a high-waist bamboo brief with a four-layer core, sizes S–XL. It is built for everyday bladder leaks and doubles as period underwear on moderate days; on heavy days wear it as backup with your usual protection. We publish only what we have tested ourselves, which is why you will not find a heavy-flow claim here. One pair is R599; three are R1,199 (buy 2, get 1 free), delivered free in a plain bag anywhere in South Africa.
How many do you need for a cycle?
Three works for most women who use it on moderate days and pads on heavy ones. If you want to use it every day of your period and wash twice a week, five. There is a longer answer in our article on how many pairs you actually need.
For the moderate days, and the “is it here yet” days.
See the briefFree plain-bag delivery across South Africa · Sizes S–XL