our signature styles

the essentials

smooth + seamless

night-time coverage

last call!

mix + match styles

Looking for the best period underwear? FLUX Undies reusable and washable period pants completely replace disposable pads and tampons, holding the equivalent of up to 5 tampons' worth of blood. A great eco-friendly alternative to pads, tampons and menstrual cups. 

super heavy flow

holds 5 tampons' worth

Sleep Short - Super Heavy FlowSleep Short - Super Heavy Flow

NEW!

Sleep Short

£32.95

flow: super heavy

holds 5 tampons

Sleep Short - Super Heavy Flow

NEW!

Sleep Short
£32.95

flow: super heavy

holds 5 tampons

heavy flow

holds 4 tampons' worth

heavy flow

holds 4 tampons' worth

Boyshort - Heavy AbsorbencyBoyshort - Heavy Absorbency

Boyshort

£27.95

flow: heavy

holds 4 tampons

Detachable - Heavy Absorbency

Detachable

flow: heavy

£27.95£20.96

holds 4 tampons

Bikini - Heavy Absorbency

Classic Bikini

flow: heavy

£27.95

holds 4 tampons

Hi-Waist - Heavy Absorbency

Hi-Waist

£28.95

flow: heavy

holds 4 tampons

Boyshort - Heavy Absorbency

Boyshort

£27.95

flow: heavy

holds 4 tampons

Bikini - Heavy Absorbency
Classic Bikini
£27.95

flow: heavy

holds 4 tampons

Hi-Waist - Heavy Absorbency
Hi-Waist
£28.95

flow: heavy

holds 4 tampons

Detachable - Heavy Absorbency
Detachable
£27.95£20.96

flow: heavy

holds 4 tampons

moderate flow

holds 3 tampons' worth

Essential Hipster - Moderate Flow

NEW!

Essential Hipster
£17.95

flow: moderate

holds 3 tampons

Essential Brief - Moderate Flow

NEW!

Essential Brief
£17.95

flow: moderate

holds 3 tampons

Essential Hipster - Moderate Flow

NEW!

Essential Hipster

£17.95

flow: moderate

holds 3 tampons

Essential Brief - Moderate Flow

NEW!

Essential Brief

flow: moderate

£17.95

holds 3 tampons

light flow

holds 2 tampons' worth

Hi-Waist - Light Absorbency

Hi-Waist

£24.95

flow: light

holds 2 tampons

Detachable - Light Absorbency

Detachable

flow: light

£24.95£18.71

holds 2 tampons

Bikini - Light Absorbency

Bikini

flow: light

£24.95

holds 2 tampons

Boyshort - Light Absorbency

Boyshort

flow: light

£24.95

holds 2 tampons

Hi-Waist - Light Absorbency
Hi-Waist
£24.95

flow: light

holds 2 tampons

Bikini - Light Absorbency
Classic Bikini
£24.95

flow: light

holds 2 tampons

Boyshort - Light Absorbency
Boyshort
£24.95

flow: light

holds 2 tampons

Detachable - Light Absorbency
Detachable
£24.95£18.71

flow: light

holds 2 tampons

Invisible Collection

ultra-thin, smooth, and seamless

Invisible Cheeky - Dusty Rose
Invisible Cheeky

flow: light

£21.95

holds 2 tampons

Invisible Cheeky - Dusty RoseInvisible Cheeky - Dusty Rose

Invisible Cheeky

flow: light

£21.95

holds 2 tampons

lightest flow

holds 1 pantyliner or half a tampon

Invisible Thong - BlackInvisible Thong - Black

Invisible Thong

flow: lightest

£16.95

holds 1 pantyliner

Ribbed Cotton Thong
Cotton Thong
£10.95

flow: lightest

holds 1 pantyliner

lightest flow

holds half a tampon

Invisible Thong - BlackInvisible Thong - Black

Seamless Thong

lightest flow

£16.95

holds 1 pantyliner

Ribbed Cotton Thong

Cotton Thong

flow: lightest

£10.95

holds 1 pantyliner

What are period undies, anyway?

still wonderin' what period-proof undies actually are? 


an absorbent panel.

a leak proof backing 

built in.


they work like *magic* but look like regular underwear.