Classic Bikini

holds OVER 4 tampons' worth

Our bestselling Bikini offers full coverage and protection, keeping you fresh 'n' dry when you need it most. 


Bikini features a soft lace trim that keeps your undies looking so cute, you might even forget you're on your period!


Our bestselling Bikini offers full coverage and protection, keeping you fresh and dry always


Bikini features a soft lace trim that keeps your underwear looking so cute, you might even forget you're on your period!

Our bestselling Bikini offers full coverage and protection, keeping you fresh and dry all the time. 


Bikini features a soft lace trim that keeps your undies looking so cute, you might even forget you're on your period! 

  • Wear For Up To 12 Hours 
  • Holds Up To 25ml, Or 4-5 Tampons' Worth 
  • For Periods, Leaks & Incontinence 
  • For Day & Night

Bikini - Heavy Absorbency
£27.95

PRODUCT INFO

Holds 4-5 tampons' worth, or 20-25ml of blood.

Wear alone for up to 12 hours.


Fabric

Interior: 50% Modal 50% Organic Cotton, Exterior: 82% Nylon 18% Lycra, Trim: 100% Polyester

CARE INFO

RINSE

Give 'em a quick rinse 🚿

WASH

Chuck 'em in a mesh laundry bag before popping them into the machine on a cold wash 👌🏽

DRY

Hang to dry outside or inside! ✌🏿


PS: Don't use bleach or fabric softener ⚠️

Customer Reviews

Based on 85 reviews
86%
(73)
11%
(9)
4%
(3)
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(0)
Z
Z.G.
Flow: Moderate
Products used: FLUX Undies, obvs!
Happy convert

I was really sceptical, but the reviews were good so I thought what the heck, I'll give them a go and see if they live up to the claim of revolutionizing periods!

Well, so far I'm one very happy customer. The fit is great -they are super comfy and flattering, no leaks or anything too grim to deal with (one of my main fears!), and super convenient without having to worry about packing my bag or stashing tampons somewhere before I head out.

S
S.H.
Flow: Heavy
Products used: FLUX Undies, obvs!
I love them

Really absorbent, not bulky, flattering fit.

C
C.R.
Flow: Super Heavy
Products used: FLUX Undies, obvs!, Disposable pads
First use

First time using flux was very positive, they are very comfortable and do hold a lot. My only comments would be that it can take a long time for the gusset to dry fully, even on a hot radiator overnight so more than 2 pairs are require to remove the need to buy pads, etc.

S
S.
Flow: Super Heavy
Products used: FLUX Undies, obvs!, Disposable pads
The best period pants!

Thus far, my favorite period pants!

I needed something that could get me through a 3 hour commute (with no access to bathrooms) which includes a hike up a steep hill.

I have already overflowed out of overnight/heavy/long disposable pads during said trip, and frankly I'm tired of it.

I wore this pant for five hours, including an hour long walk and they still hadn't soaked the whole pad yet (there were still dry areas at the front and back of the padded part). I'm amazed at how much these pants absorb!

I have another brand of period pant that was soaked and sticky after less than 5 hours.

Flux pants are by far my favorite, and are the only brand that offers a pant to hold so much liquid.

The heavy flow line has several styles to choose from, whereas my other period pants only had one style of heavy flow (at the the time I bought them).

Flux are also the most comfortable and soft period pants I have found.... even the stitched seamed areas are soft (most others are scratchy!)

I am watching for a sale so I can fill out my period pant stash using only Flux (and ditch the other brands)

And international shipping only took about 3 weeks via Royal Mail, which was surprisingly fast. I also appreciated that tracking information was provided.


FLUX Undies are your complete replacement for pads and tampons and can be worn alone for up to 12 hours.

Our unique built-in tech is moisture wicking, absorbent, and leak-proof, keeping you covered day 'n' night. 

Bikini offers full coverage with no bulk, and the soft lace waistband keeps you comfy in style.

- Wear all night, or for up to 12 hours during the day
- Holds 20-25ml, or four tampons' worth 
- Use FLUX for periods, leaks, post-partum, & incontinence!
- Wear them to school, work, exercise, or simply just to feel comfy on lazy days. 

Find out more on how our undies work.

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