Join Sparks today for exclusive treats and rewards, starting with 10% off...


Reusable period panties are the latest lingerie innovation and could revolutionise your underwear drawer. Here, M&S lingerie expert Fiona Graham explains how they work. Explore our range to find the perfect pair

Why use period underwear?

The benefits of using period panties are becoming more and more apparent, with their popularity growing rapidly over the last few years. Not only are they a convenient way to keep dry and protected during your monthly cycle but wearing reusable period panties might cut down on the amount of single-use period protection, such as tampons, heading to landfill.

Our range of period underwear has something for every flow, whether you need light just-in-case protection or something for heavier days. You can wear leak-proof underwear by itself on the lighter days of your cycle, or in tandem with a tampon or menstrual cup to give you added peace of mind when your flow is heavy. Period panties are also a great choice for coping with post-birth bleeding and often more comfortable than wearing a bulky maternity pad. And, as another plus, they look and feel just like your everyday briefs, too.

“Our light-absorbency panties hold 12ml of moisture, the same as four light tampons or two regular towels, and the high absorbency holds 20ml of moisture – which is almost double an overnight pad or super tampon,” says Fiona Graham, head of product development technology (lingerie).

These polka-dot full briefs combine style and function with a high level of absorbency to give you the confidence you need to get on with your day.

How do period panties work?

Our period underwear has three layers of protection to keep you comfortable and dry all day. The top is made of polyester that has moisture-wicking properties to draw liquid away from your body. The middle layer can absorb up to 20ml of liquid, neutralising any odours to keep you feeling fresh. Finally, there’s a waterproof layer to stop any leaks. Plus, the gussets on all our period underwear have been extended, to ensure that there is no leakage around the sides.

We recommend trying out the different absorbencies to see which one best suits your flow. High-absorbency full panties are perfect for heavier days and come in range of colours and styles.

How to wash period underwear

You can wash period underwear with the rest of your everyday laundry (up to 40°C) either in the machine or by hand. Line dry afterwards for added eco points. “We suggest a quick rinse and then pop them in the washing machine on a delicate wash cycle. Don’t use fabric conditioner as this can affect the absorption,” says Fiona.

Concerned that period panties are boring? Our range comes in a choice of colours and styles, and you can also buy multi-packs of pants in a mixture of absorbencies, so you’ll always have a pair to suit your needs. This multi-pack of everyday period panties in comfortable cotton modal is a great starting point for your new regime, with three pairs in a flattering high-leg design. All our cotton is responsibly sourced.

Words: Sarah Lafarge


Treat yourself to luxe lingerie

See the set


Discover our F to H-cup range

Find out more


Confidence-boosting foundations

Read & shop
Ways to pay
Spread the cost

Just Tap and 'Add to Home Screen'


Speed up your shopping experience by adding M&S to your home screen!


When you pay in store, scan the barcodes for the rewards you want to redeem.