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Super Heavy
SUPER HEAVY
FLOW
Max Protection
Woman wearing WUKA Stretch™ High Waist Period Pants in black for super heavy flow, offering full coverage and maximum comfort during periods.

Stretch™ Period PantsSeamless High Waist

$30.00
4.7

Size Chart

 

STRETCH & DRYTECH SIZE GUIDE

Fits 4 sizes in one pair of underwear for a perfect fit, first time!

SIZES
Size 1
Size 2
Size 3*

Universal

XS, S, M, L

L, XL, 2XL, 3XL

3XL, 4XL, 5XL,

UK

6, 8, 10, 12

12, 14, 16, 18

18, 20, 22, 24

EU

34, 36, 38, 40

40, 42, 44, 46

46, 48, 50, 52

USA

2, 4, 6, 8

8, 10, 12, 14

14, 16, 18, 20

Hip (cm)

85-100

100-115

115-130

*Not all products are available in size 3

How to Measure Your Hip Size

Adult Stretch period underwear size chart showing how to measure chest, underbust, waist, hips, and leg opening for a perfect WUKA fit. Find your ideal size first time with stretch-fit leakproof 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
Super Heavy
Size
Pack Size
Fits 4 Sizes
Fits 4 Sizes
Leakproof & Breathable
Leakproof & Breathable
Reusable 2 Years
Reusable 2 Years
Seamless No VPL
Seamless No VPL
Mid Height Gusset
Mid Height Gusset
Super Heavy Flow Up to 60ml
Super Fast Absorption Super Fast Absorption
Multi-Size Multi-Size
Seamless No VPL
Medium Gusset Medium Gusset


From the creators of the original Heavy Flow Period Underwear, NEW Stretch™ Super Period Underwear For Very Heavy Flow absorb up to 60ml of blood - the equivalent of 12 regular tampons or 8 pads/daily liners.

Key features:
  • Double Layer Inner Gusset
  • CoolMax Technology - Ultra Fast Wicking. Quick Drying.
  • Stretch™ Technology - 1 Pair Fits 4 Sizes
  • High Waist for Extra Comfort
  • Seamless- VPL Free for Invisible-Fit
  • Up to 24 Hour Wear

Perfect for long shifts, sleeping or postpartum bleeding.

Wash Before First Use


    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 80% Polyamide, 20% Elastane
    Middle 95% Cotton, 5% Elastane,
    88% Polyester, 12% Elastane, TPU
    Inner 95% Cotton, 5% Elastane,
    95% Polyester, 5% Elastane

    FAQ: Stretch™ High Waist - Super Heavy

    Stretch™ High Waist Super Heavy pants provide up to 12 hours of protection with adaptive multi-size comfort.

    How much blood do WUKA Stretch™ High Waist Super Heavy pants hold?
    Our WUKA Stretch™ High Waist Super Heavy pants absorb up to 60ml of period blood, equal to 12 tampons or 8 pads.
    What makes the Stretch™ fabric special?
    The patented Stretch™ fabric adapts to your body, expanding and contracting for the perfect fit without digging in.
    What Gusset Style are Stretch™?
    All stretch™ period underwear come with a mid-height gusset
    Can I wear them overnight on my heaviest days?
    Yes, these are suitable for both daytime and overnight wear, providing up to 12 hours of leak-free protection on very heavy flow days.
    Are they comfortable for bloating or cramps?
    The high waist style provides extra support and comfort around the stomach, making them ideal for bloating and cramps.
    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.
    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

    You may also like

    • 5 stars: 277 (83%)
    • 4 stars: 35 (11%)
    • 3 stars: 12 (4%)
    • 2 stars: 7 (2%)
    • 1 star: 2 (1%)
    Some of the reviews shown are from related products the merchant grouped with this one.
    J
    Jean T.
    These are so nice

    These are so nice comfortable

    A
    Anonymous
    Summer

    Great colour for summer wear quality as excellent as ever with Wuka

    A
    Alisha l.
    Don't let ur period box u in!!

    Simply amazing felt safe secure inside my head more than anything. Fitted perfectly i am a small i have found wuka sizes just right for me along with the level of protection against leaks what's not to like about these boxers??

    J
    JULIA k.
    Simply the Best

    Awesome pantees I can't fault them great coverage. Wearing these gave me the confidence to wear a white suit at work I felt soooooooooo confident knowing that I was protected from leaks all day long!!

    A
    Alishalovesocket
    A period thong u say??I would never have

    A period thong u say??
    I would never have believed it but this works amazingly well. Wore this to my brothers wedding i felt safe & secure and didn't have to worry about leaks especially as the dress was very very short. Every thing was contained and no problem!! Thank u 💓 Alisha lovesocket

    A
    Anonymous
    Great for period, ok for fitting! Can improve there

    Great and very leak proof for a thong, do roll up on the hip though if you’re a bit bigger, overall love the Wuka stuff though!

    A
    Anonymous
    Comfortable for horse riding and manual work

    I currently have to wear period underwear every day just in case due to bleeding being all over the place and with no warning or other symptoms. These are very comfortable and fit well and seem to wick sweat away so they are not making me sore. Can’t give 5 stars as not yet had a bleed whilst wearing but very happy so far.

    D
    Danni G.
    Love Wuka, my last pair lasted 4 years!!! And

    Love Wuka, my last pair lasted 4 years!!! And that was with tumble drying them (I know it says not to but tbf they still lasted ages!)

    C
    Catherine M.
    Great Pants

    Great Pants. Super comfy

    N
    Nastado
    Period pants changed my life

    Period pants changed my life. It’s a revolution for girls of today and I wish I had them when I was younger. You feel secure and dry throughout the day and they clean really well. Highly recommend.

    L
    Lauren
    Great pants but beware of sizing

    Excellent coverage. I’m a size 12 (M) and chose the XS-L but they are only just big enough. If you’re a size 12 or up I would consider the next size.

    A
    Anonymous
    Light, stretches well, absorbs

    Light, stretches well, absorbs well

    J
    Jessica L.
    Very

    Very good

    A
    Anonymous
    Great quality just to small for me

    I recieved these pants they are well made . Sadly fjor me they felt tight so I gave them to my daughter who hasn’t worn yet . Iam a 10-12 but think the medium fit a 10 better . I am a small 12 . I will order the larger ones as I like the quality .

    A
    Am
    Incredibly comfortable, would definitely

    Incredibly comfortable, would definitely recommend

    A
    Anonymous
    I use these for running

    I use these for running (stress incontinence) and they work brilliantly

    A
    Anonymous
    Great for daughter

    Great for daughter. Would of liked no branding on outside

    P
    Philippa F.
    These fit perfectly and are so secure

    These fit perfectly and are so secure. I’m extremely happy with them.

    M
    Moira P.
    Feel really nice on, comfortable and silky smooth

    Feel really nice on, comfortable and silky smooth. Good bum coverage. Still debating if to go down a size.

    A
    Anonymous
    Incredible! Can wear them all day

    Incredible! Can wear them all day. No leakage, no uncomfortable feeling during wear. Revolutionary!

    Z
    Zamzam
    I have been using wuka pants for over 2 years and

    I have been using wuka pants for over 2 years and omg they are the best I feel so comfortable and confident that they will never leak. I always hand wash them and they have lasted me a long time. My period pain has decrease dramatically. And I can't feel anything. It's free bleeding with confident and I am so happy j made this purchase. Best decision i have ever made. I have tired other brand but let me tell you you can feel and see a huge difference with Wuka pant. They have not failed me at all no leak or smell and its 2 years running. Thank you so much life changer♥️

    C
    Charlotte H.
    I gave these the ultimate trust and wore them hiking

    I gave these the ultimate trust and wore them hiking across my entire period. I was worried about the sizing but they stretched to fit and felt really comfy. I really like the fabric, they feel much nicer than my other pairs and I like the high waist - I have lower fit ones and they make me feel so uncomfortable. They absorbed everything, held out whilst hiking mountains for hours and I never felt a single leak. Also love that there's no PFAS, so so important to me!!

    C
    Claire C.
    I've had my period pants from WUKA Adult Sleep

    I've had my period pants from WUKA Adult Sleep Set Super absorbant in black but I haven't used them yet but I'm super they'll be super comfy and they feel really nice to most definitely recommended and worth five stars and the money.

    A
    Anonymous
    Wuka Thong

    Perfect. Comfortable. No VPL. Highly recommend

    A
    Anonymous
    Comfortable and secure

    Comfortable and secure. Just what I needed

    L
    Laura K.
    Best period pants I’ve had so far

    Best period pants I’ve had so far. They feel very secure, not too bulky and nice and flexible. I have very heavy periods so still had to use tampons as well as these for the first day or two, but felt confident only wearing the knickers for the last few days.

    r
    ruth d.
    Wedding day saviours!

    Wedding day saviours! I was on my period for my wedding with a sheath wedding dress. Two pairs of these saved me from any period-white dress stress. True to name, they were seamless beneath my dress and were super comfortable, no award digging in, rolling down or sausaging! 10/10 would recommend.

    L
    Lindsey B.
    Fantastic product .

    My daughter is going through peri menopause , I’m sure you know what that means , these heavy weight period pants have really helped her feel secure and confident whilst at work . The multi size worked well . Great product.

    M
    Myriam B.
    Really well designed and effective

    Very impressed with the design and effectiveness. First time I've tried period pants, was reluctant but my research said this brand would fit my needs. Comfortable and keep me dry for a whole day even on my heaviest day. Just change into a new pair at night. Really easy, better at night than a pad that slips around. Can go hiking in these with no worries. Easy to pop in the wash with a normal load of washing.

    H
    Harriet
    So impressed!

    I bought size 2 based off reviews and size guide. When I tried them on, my first thought was they felt a little loose and too comfy to be effective. I then happened to have a very busy day and a very heavy period, and they were absolutely amazing. They held up, were unbelievably comfortable and very secure - could not be happier with my purchase and will definitely be buying more!

    C
    Corinna B.
    My Daughter has been using WUKA period pants for

    My Daughter has been using WUKA period pants for the past few years now having to replace a few pairs,
    Great stretch comfort and reliability highly recommend