Period Swimwear: The Best UK Brands And How It Works

Don't avoid the pool or beach just because it's your time of the month.

Periods can be messy. Whether it’s the realisation that you’ve leaked on your bedsheets during the night or that niggling worry your new jeans have stained while you’re out and about, it’s hard to feel 100% confident on heavy flow days.

Period-proof underwear offers a way to stay clean and green, with brands including ModiBodi, Thinx and Wuka all offering absorbent knickers that negate the need for pads, tampons or cups (we even tried them for your benefit).

But it’s no surprise there’s a growing demand for period swimwear, too. In a study of more than 14,000 women, 78% said exercise reduces symptoms they experience during their menstrual cycle – and that includes period pain.

Whether you’re a lido dipper or someone who favours an intense workout in the water, why should your period stop you? And if you’re off on holiday, who says you have to avoid the pool or beach just because it’s your time of the month?

Brands are making strides to help us stay as comfortable as possible through our cycle without compromising the environment, and while those that make swimwear are few and far between, here’s our round-up of some to consider.


Currently, ModiBodi is the only brand available in the UK offering a period-proof option with its Got Your Backstroke Leak-Proof Active Bikini bottom, £31.50, and Set Me Free Style Leakproof One Piece, £98.50 – pictured below..

Both are made from a blend of polyamide lycra, polyester and nylon with the ModiBodi Modifier Swim Technology built into the gusset – designed to be water-resistant and fast-drying, preventing leaks and stains and fighting odour.

Ruby Love

Across the Atlantic, you’ll find a much wider variety of pieces from the US brand Ruby Love, which has been selling period swimwear in a rainbow of colours and styles since 2015. The good news is that it ships to the UK – with international delivery starting from $14.95 (£11.82).

Ruby Love uses a organic cotton gusset with a built in absorbent liner to collect your period blood and stop front, back or side stains. The brand claims you can wear its range without a moon cup, tampon or pad – but that its look is discreet and smooth, so you can avoid feeling like you’re wearing a nappy.


US period pants brand Thinx – which recently hung its knickers in the windows of Selfridge’s on London’s Oxford Street – is yet to bring out its own swimwear. However, it does have an activewear collection – including a black leotard and unitard for light days and black shorts for the heaviest days of your cycle.

If all you want to do is dip your toes in the sea or hang round the pool, the shorts will suit, but Thinx does not recommend wearing its underwear or activewear to swim in because it can’t guarantee its moisture-wicking, odour-controlling technology will work in the water.

HuffPost UK has reached out to Thinx and will update you as and when it announces any plans to dive into swimwear. In the not-too distant future we hope to see more brands developing their own period-proof swimming kit.

In the meantime, if you want to clock up lengths with a cleaner conscience, why not check out our guide to the best sustainable swimwear here.

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