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Medium
MEDIUM
FLOW
Model wearing WUKA Ultimate™ Boxer Medium Flow Period Shorts in black, showing full-length fit with branded waistband—comfortable, leak-proof protection for medium flow days

Ultimate™ Period PantsBoxer Shorts

£24.99
4.9

Size Chart

 

ULTIMATE, PERFORM, LACE, RE-PURPOSE & BASICS PERIOD PANTS

SIZE
UK
EU
USA
XXS 4-6 30-32 0-1
XS 6-8 32-34 1-2
S 8-10 34-36 2-4 
M 10-12 38-40 6-8
L 12-14 42-44 10-12
XL 14-16 44-46 12-14
2XL 16-18 46-48 14-16
3XL 18-20 48-50 16-18
4XL 20-22 50-52 18-20
5XL 22-24 52-54 20-22
6XL 24-26 54-56 22-24

 

Styles: High Waist, Midi Brief, Bikini, Hipster

 

How to Measure Your Hip Size
Ultimate period underwear size chart showing how to measure chest, underbust, waist, hips, and leg opening for the perfect WUKA fit – get your size right first time for all-day leak-free comfort
WUKA TIP: No tape measure? 
You can measure yourself with a belt or dressing gown cord and a 30cm ruler! Tie the belt around your hips, place a piece of tape or pinch where it reaches, then lay flat and carefully use the ruler to measure the length.

Choose options

Medium
Heavy
Choose Size
Pack Size
Tencel Fabric
Tencel Fabric
Leakproof & Breathable
Leakproof & Breathable
Reusable 2 Years
Reusable 2 Years
High Coverage
High Coverage

WHY YOU’LL LOVE IT
Roomy, cosy, and ultra-reliable - these boxer shorts combine anti-chafing comfort with full leak-proof protection. Whether you're lounging, sleeping, or on the move, these are designed to give you complete confidence in a low-profile silhouette.

HOW IT WORKS
A generous full-coverage gusset holds up to 15ml of flow (around 3 tampons or 2 pads), delivering up to 12 hours of leak protection. With a longer leg cut and stretch waistband, they're made to stay snug without rolling or pinching - so you can go about your day completely worry-free.

BEST FOR
Everyday comfort - anyone who wants practical, leak-proof wear that actually feels like underwear.

GOOD TO KNOW
Wash before first wear. Made from breathable Tencel™. Each pair replaces over 200 disposable pads or tampons across its lifespan.

Shipping

UK orders usually arrive within 3–5 working days (Express options available), and international shipping is fully tracked from just £5 – £10 via Royal Mail. For our EU customers, we also collect VAT upfront to avoid any surprise fees on delivery.

If it’s your first pair, you’re protected by our 100% Satisfaction Guarantee — try one on, and if it’s not the right fit, you can return or exchange within 40 days. All other items must be unworn and in their original packaging. Once we receive your return, refunds are processed within 10 working days.

See our Shipping Cost and Returns & Refund Policy.

Wash and Care

Rinse, Wash at 40°, air dry inside out. Tested to 54 washes.

Composition

Outer: 95% TENCEL modal, 5% elastane Middle: 80% polyester, 20% elastane Breathable TPU
Inner: 95% TENCEL modal, 5% elastane

FAQ: Ultimate™ Boxer Shorts - Medium

Ultimate™ Boxer Shorts Medium offer fuller coverage, comfort and medium-flow protection for up to 12 hours.

How much blood do WUKA Ultimate™ Boxer Shorts Medium hold?
Our WUKA Ultimate™ Boxer Shorts Medium absorb up to 15ml of period blood, equal to 3 tampons or 2 pads.
What makes the boxer short style different from other period pants?
The boxer short style provides fuller coverage and a sporty look, combining medium flow absorbency with everyday comfort.
Can I wear them overnight?
They medium flow Boxers are suitable for daytime, providing up to 12 hours of leak-free protection on medium flow days. We recommend the Heavy Boxer for overnight protection.
Are they comfortable for lounging or sport?
The relaxed boxer cut makes them ideal for lounging, or days when you want extra comfort without restriction.
How do I wash and care for them?
Rinse in cold water after use, then machine wash at 40°C without fabric conditioner. Air dry only to maintain absorbency.
How long will they last and how many pairs do I need?
Each pair lasts up to 2 years, helping you save money and reduce waste. Most customers use 5–7 pairs for a full cycle rotation.
2024 Health & Wellbeing Awards Gold Winner Badge – recognising WUKA for excellence in health and sustainable period care
Beauty Shortlist Mama & Baby Awards 2024 Winner Badge – celebrating WUKA’s award-winning products for expecting and new mums
Our Stretch Super Heavy Period Pants take home the silver-award at the Green Parent Natural Beauty Awards 2025 for best menstrual care product
WUKA Perform Period Swimsuit wins best value cross-training kit at the Women's Running Awards 2023
Our High Waist Black Seamless Stretch – Super Heavy Flow period-proof underwear wins best period pants at the Beauty Shortlist Wellbeing Awards 2025
WUKA were finalists at the Pure Beauty Global Awards 2025
We won Gen M Award Winner - Breakthrough Partner for our seamless DryTech™ Incontinence light leaks underwear
The WUKA Postpartum Stretch™ set has been voted Best Postpartum Wellness Product for 2025 by The Positive Birth company

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  • 5 stars: 39 (89%)
  • 4 stars: 5 (11%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
C
Clare
Love these!

I got these thinking I wouldnt like them, I was wrong! So soft and comfy - got the boxers for overnight on my heavy days, they hold loads, I love the full coverage, no leaks and great for catching the flood when I get up!! I did size up so they are looser while I'm in bed and theyre perfect :)

P
P.
Best period underwear!!

These are not just efficient they're also super comfy, particularly if you get bloated. I can move quite a bit when I sleep so this shape is perfect for full coverage. I would buy this shape as non-period underwear if you release it!

K
Kerrie T.
Amazing!

I have PCOS and endometriosis and normally bleed through 8 pads and 2 pairs of pants on day 1 of my cycle and often leak through my clothes. I have tried many other options and other brands of period pants. One pair all day with no leaks! I am so shocked. I will be stocking up on more of these each and every payday and stocking up for my young daughters future.

L
L.C.
So comfy

I’m a bit obsessed with these boxer shorts, I might have to save up for more! They’re extremely soft and comfortable. I’ve worn them overnight so far but I can totally see myself wearing them under dresses in the summer too.

R
Rebecca W.
Boxer shorts

My autistic daughter struggled to wear any underwear before we discovered these. She now wears them every day, even when she doesn't have her period. She finds them so comfy., which is great, it's just shame they're not a little cheaper.

L
Louise B.
Great product

Teenager very happy with the boxers - trendy and useful at the same time!

L
L.B.
My favourite period pants

These are absolutely the most comfy period pants I have ever worn! I would wear this as a normal pair of pants - I've not managed to find a boxer style ladies pants that is as nice to wear as these are. I found the sizing spot on.

Hello,
That's fantastic to hear! We're thrilled you find our period pants comfortable and perfectly sized. We strive to provide both functionality and comfort in our products. Your positive feedback means a lot to us. If you have any more comments or need further assistance, please feel free to reach out. Thank you for choosing WUKA :-)

E
E.K.
Enzo

I could wear these everyday, very sensory friendly. Only reason I don't wear daily is the price, if you produced this design as just normal underwear with say geeky pictures on I'd wear wuka everyday not just a period day!

A
Anonymous
Amazing

These pee pants work wonderfully for guys too , very discreet

K
K.H.
They could be great, but too small

This is a 3.5, because I like the style and the way these are built. However, make sure to size up! Some Wuka pants are perfectly sized, while others are built small. I was hoping these would be awesome, but I unfortunately can't wear them comfortably.

H
H.A.
Love these for night time or trackie days

I’m a standard UK 10 and have found that small is a good size for me in a few of the different styles. The boxers felt a bit on the snug size, so would recommend sizing up. Felt really comfortable, snug and secure in these. Would recommend!

S
S.P.
Really high quality but come up small

These are excellent boxers and I’m very happy with them. They do come up small though, I am a size 16/18 and I looked at the size chart, wanting to make sure I had plenty of room ordered a 3XL. Surprised they are a bit snug! Usable but ideally I’d have a bit more give so will order again and get 4XL. Being bloated during period week probably doesn’t help. However a bit soul destroying to be ordering anything in 3XL, let alone 4XL!

E
E.G.
OH MY GOD (warning - overshare)

WOW. Ok I did not expect them to be this good, they're so comfortable! Definitely size up, I would normally be an 8-10 but I bought a size M and they're absolutely perfect. I even wanna wear them when I'm not on my period, and they've reduced some of the dread and dysphoria that comes with my period bc I don't have to wear feminine underwear!! They're a bit thicker than normal boxers, which I was sceptical about at first, but it's not at all noticeable when they're on and it's actually good, because I have a large bum so all my underwear tries to go- uh- inside. But since these are a little thicker they don't do that! The material is so soft too, they're the softest pants I've ever owned and when you size up, the waistband doesn't dig in AT ALL, which is much better than normal boxers. I got these because when I wear my cup, it does leak and I don't know why or how to prevent that, but I wanna stop using pads bc of the environmental issues that come with that. So now, instead of wearing a pad with my cup, I can wear these! They're very pricey even though I get a student discount (I got them in the black Friday sale) so I think I'll just stick to the one pair for now, but still, they're amazing!
tl:dr -
~ extremely comfortable
~ no sensory issues (I'm autistic)
~ waistband doesn't dig in (IF YOU SIZE UP!!!)
~ dysphoria fighter
~ thicc
~ no wedgie
~ very soft
~ environmentally friendly
~ my bank account hurts
~ I REPEAT, SIZE UP!!! YOU'LL THANK ME FOR IT!

N
N.M.
Sized up-fits perfectly and is really comfortable!!

I'm so so happy about this boxers!! They give me gender euphoria, during my period, it's unbelievable! I ordered an L when I'm usually an M, and they fit really well, they are so comfortable! I just love this so much. They do absorb quite a bit. Again, I'm just really happy I got them, and hope to buy a couple more, they look good, do their job well, and are just really comfortable!

C
C.
Little snug compared to the high waist breifs

I am a 16 dress size (UK) - bought size XL
I bought 3 pairs to wear at nighttime - I wanted slightly more coverage at night and loved the look of them. I do find the fit more snug compared to the high waisted briefs I also bought in size XL which are perfect & unbelievably comfortable. I wish they were more high waisted or that there was a high waisted option to choose as find they cut into my tummy or roll down in the night. They fight tight on my thighs too - I think because I purchased them solely to wear at nighttime I would just like them to be that little bit more comfortable. I would have sized up if I bought them again in hopes they would be that little bit larger around the thighs and a little more high waisted. Still okay to wear and not leaked at all at night and definitely a lot more comfortable than wearing a pad! 😊

L
L.K.
Very comfortable

They're comfortable, there's no irritation and no feeling gross/soggy. I can finally sleep easy without having to shift positions a million times, I'm definitely buying more. :)

M
M.P.
Sizing runs a bit small! But so comfortable

Gender affirming and comfortable! I got a size too small at first but exchange was easy and fast.

L
L.
So comfy

I love these - I’m a 16 in jeans and just between XL-2XL when I measure myself according to Wuka’s size guide (I have XL in midi briefs and 2XL in high waist) but after reading reviews I decided to risk the 3XL instead of 2XL for these because of the comments about the waistband and also I like things to be roomy due to bloating. I’m glad I got the 3XL as there’s no digging anywhere and they’re super comfy - and because they’re boxers the coverage is still good even though I’ve gone 1.5 sizes up and they’ll accommodate my bloat! I think 2XL would’ve been fine too though, I just wanted the extra room. These are definitely my new favourites and I guess the sizing depends on how you like them to fit and your personal measurements, so I hope this review helps!

R
Raedan
So comfortable

I have bought two 3 packs, briefs and boxers, they are so comfortable. Im quite active but these keep up with me.

A
A.G.
The best period pants

I have been buying WUKA pants for my daughter since last year. She has many and in different styles. Recently, as she has grown, I bought another pack of 5 and they fit properly and are very comfy (her words). My order got lost in the post and after I informed the WUKA team a new order was sent and I received. Happy customer here!

K
Katie
PLEASE make this style in all your sizes!

I would absolutely love to try this style, I know it would be my favourite, but I need a 5XL :( Please think about it!

A
A.A.
Best pants EVER

As underwear, these are sooo comfy. And as period underwear? Comfy, leak proof and look cute. The style is great, perfect for time of the month. I love that they cover the cheeks, the other styles can give me wedgies. Easy to use and clean. I opted for size M which was good, they are perfect. Usually I am a size XS/size 6-8 in clothes generally from other retailers so maybe sizing up for these is a good idea. I want to buy more, but they are a tad expensive. When on offer, will defo buy more multipacks of these!!

I
I.B.S.
Great product

These are really great. I was concerned about them not holding in the first days due to them being called "medium flow". This was not a problem at all they held until I actually just wanted to change them for bed. They are much more convenient than pads or tampons and much less faff.
I do agree with another commenter that the waistline is a bit hard. Maybe this is mandatory for them to stay up? But if you are making new ones I would say a softer waistline might be nice.

I
I.B.S.

Bought a 3 pack last month they are super helpful. They are way more absorbent than they are even said to be, lasting up to 24 hrs. Also super comfy, they just blend in like normal underwear.

I agree with another reviewer that they have a slightly hard waistline. Its not enough to bother me really but or can dig in a bit - if you are taking design tips I would say get a softer waistline!

S
Sarah J.W.
Game changer

I wanted to ditch the tampons due to having sudden anxiety around using them and I definitely won’t be looking back, these period pants are amazing, I never leak and can be heavy at times. Due to being a butch lesbian I’m so happy at how accommodating you are with the boxers. In didn’t like the idea of wearing any kind of knickers so was happy to find these in the boxers style!

R
Rubina R.
Overall, I’m a changed woman.

Overall, I’m a changed woman. The period pants have been a game-changer for me. They wear well, make period maintenance a lot less messy and they look pretty. Also, I no longer feel guilty each time I throw away a soiled pad and the plastic wrapper that comes with it.

M
Miriam H.
Absolutely excellent

I actually ordered the breifs but what arrived were the boxers. Rather than waste resources sending them back I decided to use these instead and I'm absolutely delighted with them. So comfortable, no chafing, they don't ride up your bum and you don't have to keep surreptitiously pulling them down! Total protection no leaks whatsoever and that was with wearing them from the morning through till the following morning! Highly recommend!!!

F
Freya P.
Amazing

These are the first periods knickers I tried and I actually can’t believe no one told me about them sooner. They’re full coverage so really comfy, potentially better for colder days as I got slightly sweaty wearing them but that would be the only down side. Bought another 2 pairs.

J
Joanne Y.
Fantastic, comfortable protection for this active middle aged Mum!

I’m a middle aged Mum of 3. Menopause is on the cards in the next few years and my periods are not as reliable as they used to be either in flow or timing. I train, teach and compete in martial arts 6 days of the week and need protection that will enable me to get on with what I love doing without worrying about periods or pee leaks. WUKA boxer shorts have been perfect for me. They don’t slip down (pulling up slipping pants with boxing gloves on doesn’t work!) they don’t ride up (extracting pants from your nether regions is not particularly elegant). They wick away sweat brilliantly, and keep me dry and odour free. The slightly longer leg seems to prevent them from bunching up. I can concentrate on giving my best during my activities without worry. All this comfort and peace of mind, as well as being environmentally friendly, has been brilliant. I have used other well known brands and I have found this type of product to be quite a financial outlay initially. I bought my first pair of WUKA boxers at full price but have since purchased using the multi-buy discount and with additional discounts and this has meant they are so much better value compared to similar products by competitors. WUKA is definitely my go-to for this type of product.