Classic Boyshort - Heavy Flow
Boyshort style period underwear with elastic logo waistband
Boyshort style period pants with elastic FLUX Undies logo waistband
Boyshort style period pants with FLUX Undies logo waistband
Classic Boyshort - Heavy Flow
Classic Boyshort - Heavy Flow

Classic Boyshort - Heavy Flow

Regular price £27.95
/
Tax included. Shipping calculated at checkout.

Get comfy on your period with our leak-proof Boyshort period pants, featuring our classic logo elastic waistband full of stretch and softness. With our signature built-in tech that is moisture wicking, absorbent, and leak-proof, Boyshort gives you the ultimate comfort and protection during your period, day and night.  

  • For periods, leaks and incontinence
  • Holds Four Tampons' Worth / 20-25ml
  • Wear For Up To 12 Hours Leak-Free
  • Soft, Stretchy and Comfortable
  • Lightweight and Quick-drying
  • OEKO-Tex Certified Materials
  • Free From Toxins, Chemicals and PFAS/PFOA

Materials: Body95% TENCEL Modal 5% Elastane Gusset: Absorbent Blend, Breathable PUL Packaging: 100% Recycled and Recyclable Cardboard

🍃 Bleed Green: Each pair of our period pants replace 200+ disposables from going to landfill, reducing your waste by 99.5%

🤝 Giving Back: For every purchase, we give back to someone in need. Find out more about our #ByYouForThem giving back scheme here

We offer free shipping on all UK orders and free shipping on International orders over £75.
For same-day dispatch and next day delivery, please place your order before 1pm.
All orders are dispatched from our UK warehouse using trusted couriers such as Royal Mail, DHL and DPD. 

Christmas 2021 deliveries

UK

DPD Next Day Delivery Service 

Next day service, order by 12pm 23rd December, £6.95

Royal Mail 1st Class Delivery Service 

1-2 days, order by 12pm 22nd December, £4.95

FREE Standard Shipping Service 

2 days, order by 12pm 22nd December, FREE

 

Delivery options

UK

DPD Next Day Delivery Service 

Next day service, shipped by DPD tracked, £6.95

Royal Mail 1st Class Delivery Service 

1-2 days, shipped by Royal Mail tracked, £4.95

FREE Standard Shipping Service 

2-3 days, shipped by Royal Mail untracked

 

EU

*Free standard shipping is offered on all EU orders above £50 

Express Tracked Shipping Service 

1-2 days, tracked and signed, £14.95

Tracked Shipping Service

3-5 days, tracked, £9.95

Standard Shipping Service

3-5 days, untracked, £4.95 (or free on orders above £50)

 

USA & Canada

*Free standard shipping is offered on all International orders above £100

Express Tracked Shipping Service 

1-3 days, tracked and signed, £19.95

Tracked Shipping Service

5-7 days, tracked, £11.95

Standard Shipping Service

5-7 days, untracked, £8.95 (or free on orders above £100)

 

Rest of world

*Free standard shipping is offered on all International orders above £150

 Express Tracked Shipping Service 

1-4 days, tracked and signed, £19.95

Tracked Shipping Service

5-7 days, tracked, £14.95

Standard Shipping Service

5-7 days, untracked, £8.95 (or free on orders above £150)

Think our period pants sound too good to be true? Take them on a risk-free trial for 60 days!

If our undies don't work as promised, let us know within 60 days and we'll refund you, no questions asked. The 60-day risk free trial applies to one worn pair of undies only. Refunds will be paid to the original payment method that was used to place the order.
🚿 Rinse after use.
🧽 Machine wash on 30-40 degrees.
 🍃 Hang to dry or dry indoors on a radiator.
⚠️ Do not use fabric softener or bleach. No tumble drying.
And that's it! Your FLUX Undies are ready to wear again!

Our Period Pants Are:

Sustainably Manufactured

We only use eco-friendly materials that are sustainably manufactured

Vegan and Cruelty-Free

Made from natural materials and never with animal materials or testing

Free From Nasties

Certified safe for skin and free from toxins, chemicals and fragrances.

60-Day Money Back Guarantee
How They Work

Our period pants absorb up to 5 tampons' worth of liquid, yet they look and feel just like regular undies.

Our built-in tech works like this:

1. Top layer wicks moisture away from the surface quickly, to keep you dry

2. Our middle layers absorb your blood and lock in your flow

3. The bottom layer pushes liquid back up and keeps you leak-free

It's simple. Just wear, wash and reuse.

Blood, Sweat, Whatever.

Three layers of fabric absorbing liquid showing how period pants work

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Customer Reviews

Based on 176 reviews
88%
(155)
9%
(16)
3%
(5)
0%
(0)
0%
(0)
E
Elena Sabà (Padova, IT)
Flow: Heavy
Products used: FLUX Undies, obvs!

Fantastici! Più comodi per me di qualsiasi altro metodo....

S
Sarah E (Golders Green, GB)
Flow: Moderate
Products used: FLUX Undies, obvs!, Cloth pads, Menstrual cup
Love these

Very happy with these. I've never used period pants before and I'm glad I've tried them - really comfortable and I feel confident that they will not leak.

A
Anonymous (Milton Keynes, GB)
Flow: Heavy
Products used: FLUX Undies, obvs!
Game changer

Absolute game changer, Iv only used these at home so far as it happened while I was home but I feel dry, No need to worry about changing sanitary products all the time and so comfy

E
E.S. (Birmingham, GB)
Flow: Heavy
Products used: FLUX Undies, obvs!, Menstrual cup
Very happy

At first I couldn’t see myself spending this much on underwear but now I'm buying more, they make the whole period experience much more comfortable. As the product information states I would size up for this particular style :)

V
Veronica B (Dublin, IE)
Flow: Super Heavy
Products used: Disposable pads
Sizing

Great product. Only thing to be careful of is size. I'm a 16 plus (the Covid stone plus!) so went for 16/18 but band is a bit tight bearing in mind bloating etc. But other than that so comfortable compared to bulky pads.

M
Marina A. (Nicosia, CY)
Flow: Moderate
Products used: FLUX Undies, obvs!, Tampons
Very comfortable

I've worn these on my heavy day during night-time and while working from home during quarantine and I am very pleased with them! I haven't had any leaks, they are very comfortable and they don't smell! That being said, I cannot easily wear them outside the house because of the heavy padding, since I mostly wear thongs.