Period underwear looks like normal underwear but has a thin, built-in layered gusset that does the work of a pad without the pad. The layers pull moisture away from your skin, hold it in a leak-proof core and stop it from passing through to your clothes. No bulk, nothing to insert, just undies you bleed into and then wash. Here's the actual mechanics.

What makes period underwear leak-proof?

It's the layers, not magic. A good pair has a top layer that wicks blood away from your skin so you stay dry, an absorbent core that locks it in, and a leak-proof barrier layer that stops anything from reaching your clothes. The rest of the pair feels and moves like your favourite undies. That combination is why they work without making you feel like you're wearing a nappy.

How much can period underwear hold?

It depends on the style, but many pairs hold the equivalent of a couple of tampons' worth, and heavy or overnight styles hold more. That's plenty for a light-to-moderate day on its own, and heavy styles are built for your first days and for sleeping. If you're a heavy bleeder, reach for the heavy or overnight pairs, or pair them with a cup on your worst days. Find your perfect fit here.

Do period undies feel wet?

This is everyone's first worry, and the honest answer is: much less than you'd expect. The wicking layer moves moisture away from your skin, so it feels more like normal underwear than a wet pad. You notice it most right as flow happens, then it settles. On heavy days you'll feel fuller, which is your cue it's time to change.

Are period underwear hygienic?

Yes, when you wash them properly. They're designed to be rinsed and machine-washed between wears, the same way you'd wash any underwear, just cold and no softener. Fresh pair, clean undies. Full wash guide here.

Are they actually worth it?

For most people, yes. One pair replaces a stack of disposables over its life, so the cost evens out and then works in your favour, with less waste and fewer last-minute chemist runs. The comfort is the bit people don't expect to love and then do.

Shop the Period Underwear range or the Pocket High-Waisted Brief.

Quick answers

How does period underwear work?
A layered gusset wicks blood off your skin, locks it into an absorbent core, and a leak-proof barrier stops it reaching your clothes. The rest feels like normal underwear.

How much blood can period underwear hold?
Many pairs hold a couple of tampons' worth, heavy and overnight styles hold more. Great alone on lighter days, and built for your heaviest days and sleep.

Does period underwear feel wet?
Much less than you'd think. The wicking layer keeps your skin fairly dry, so it feels closer to normal undies than a wet pad. Feeling full is your cue to change.

Is period underwear hygienic and reusable?
Yes. Rinse and machine wash cold between wears, no softener, hang to dry. A good pair lasts years.