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M&S

3pk Heavy Absorbency Period Full Briefs

£20

Colour

Customers say:

Fits a little big()
Size

Matching items: T-shirt Bra A-E
Free standard delivery over £60

Product code: T617951P

About this style

These soft, modal-rich menstrual underwear offer all-day comfort and confidence. The full brief style provides good coverage, while our Flexifit™ technology ensures a flexible fit. With heavy absorbency, this period underwear is leak-proof and super absorbent with anti-odour technology and a triple-layer gusset to keep you feeling fresh and dry throughout the day. The low-rise design sits comfortably on the hips for a secure feel. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Details & care

Style

Low rise

Added Stretch

Features

Flexifit™ technology

moves with you for all-day comfort

Composition

89% modal, 11% elastane (exclusive of trimmings) , Heavy absorbency , Gusset layer 1 - 58% polyester, 42% elastomultiester , Gusset layer 2 - 84% polyester, 16% polyamide , Gusset layer 3 - 100% polyester

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Iron at low temperature

Do not dry clean

Delivery, collection & returns

Delivery

Standard

UK Standard Delivery is available for £3.99 or free on orders over £60 (excluding furniture).

Nominated Day

UK Next Day Delivery and UK Nominated Day Delivery (excluding Northern Ireland) are available for £5.99 (excluding furniture)

Collection

Collect from store

Store collection is free on all fashion, home and beauty orders.

Returns

UK returns

Free

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (77)

4.5

77% Recommended this product

Mentions
10 February 2026Oggywhite
Verified Purchase

Uncomfortable

No, I don't recommend this

I was disappointed that the thick seam is uncomfortable

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 February 2026Absie197
Verified Purchase

Nice & Comfy

Yes, I recommend this

A tad on the large size, however this makes them more comfy. Nice feel material.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

06 February 2026FairReviews
Verified Purchase

A hug for your uterus

Yes, I recommend this

I love these period knickers. Having tried a number of styles and absorbency types from brands who solely make period knickers and feeling like I am wearing a nappy, I am very impressed with these M&S ones. Firstly, absorbency is a preference, so everyone will have a different experience based on their flow. My flow is light to medium but I like heavy absorbency knickers for extra protection. Therefore I can’t speak to the suitability for someone with a heavy flow. But for me, they’re perfect. No leaks. Style and fit wise, I love that they feel like they’re giving me a hug. They’re high waisted and full brief. I easily wore these under my gym leggings without feeling like I’m squeezing lyrca over a nappy. As other reviews have mentioned, they’re generous in size. I’m between a 12-14 and the 12 are a perfect fit. This is unusual for M&S, as I often find I have to size up in knickers. I’m terms of washing, they’re not too thick that you’ll be waiting days for them to dry. They dried in the same time as the rest of my laundry. I am tempted to buy a second pack. Great value for money even without Sparks discount.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

04 February 2026Monkeypunkle
Verified Purchase

Great product!

These are really superb for giving confidence with minor flow issues at night. They are very comfortable and wash well.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

04 February 2026Jojo165
Verified Purchase

Great value

Yes, I recommend this

Decent. I’ve had better material ones elsewhere but for the money, these are decent. Love period pants. Almost forget I’m on my period!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

04 February 2026Sarah S 84
Verified Purchase

Super comfy

Love these, really comfy and soft. I still sometimes leak out of them on really heavy days, generally at night, but brilliant as a eco-friendly alternative!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

03 February 2026MILO16
Verified Purchase

Good value, good quality

Yes, I recommend this

I am 68, these pants have given me confidence when I am out

Reviewer Ratings

How did it fit?

Large

Helpful?

Reviewer Ratings

How did it fit?

Large

02 February 2026Franirl
Verified Purchase

Great value

Originally posted on marksandspencer.ie

Yes, I recommend this

Very good quality as to be expected from M&S. Worth the price and comfortable.

Helpful?

27 January 2026Crazy elf
Verified Purchase

Really comfortable

Yes, I recommend this

I am a lady of an older generation so use these for mild incontanace. They give me confidence when out and about for any mishaps. I would usually wear panty liners or towels for incontanace but these pants are so much more comfortable. If your incontanace needs are more, then they may not be suitable. But for me they are great.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

26 January 2026pam1906
Verified Purchase

Excellent for Incontinence

Yes, I recommend this

Excellent product bought for incontinence when exercising gives me confidence to exercise without worrying about pads moving or showing. Great product great fit

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

22 January 2026Abbeydog
Verified Purchase

Excellent period pants

Yes, I recommend this

Size 14 perfect fit for me with plenty of stretch...Colour is lovely so comfortable...Would like some new pastel colours for a change but the material and the fit is perfect for me x

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

20 January 202628ele
Verified Purchase

Comfortable

Yes, I recommend this

Really nice fit, comfortable and fit for purpose 😊

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

19 January 2026AbigailJ
Verified Purchase

Comfy and stretchy and soft!

Yes, I recommend this

I love these period pants! Had been using the cotton ones, but after many washed those go quite stiff / inflexible and become a bit tight. These are SO soft and stretchy I love them!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

15 January 2026Jules28uk
Verified Purchase

Too bulky

No, I don't recommend this

I bought them for light stress incontinance. Unfortunately they are far too bulky for that. I felt like i was wearing a nappy.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 January 2026Mrs Nana
Verified Purchase

Very comfortable

Was dubious about the leg staying put in these. Didn't intend to originally order these but looked at so many eventually ordered in error. However I am pleasantly surprised at how comfy they are and the legs stay put to be fair. I will see how they perform after a few washes and if they keep shape then will definately order more for the comfort factor alone

Reviewer Ratings

How did it fit?

Large

Helpful?

Reviewer Ratings

How did it fit?

Large

04 January 2026AlysonF33
Verified Purchase

Restores confidence

Yes, I recommend this

These pants are great for mild incontinence and fit very well. They are comfortable too.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

02 January 2026Sam1920
Verified Purchase

Amazing

Yes, I recommend this

I bought these for my 13 year old daughter. She gets on with them really well. No leaking and very discreet. I would definitely recommend.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

21 December 2025BeccaBoo81
Verified Purchase

Perfect

Yes, I recommend this

Brilliant and dare I say life-changing? Will not be going back to disposable pads. These are comfortable, very absorbant, easy to wash, discreet and much better for the environment.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

16 December 2025Sparky81
Verified Purchase

Very comfortable

Yes, I recommend this

Bought for inflammatory bowel disease leaks. Excellent fit and comfort level. Would like to be able to stick a pad inside for extra protection.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 December 2025Biggal
Verified Purchase

Very nice but come up big, go down a size.

Yes, I recommend this

Good quality, need to go down a size. Wish they came in cotton though for the summer months.

Reviewer Ratings

How did it fit?

Very large

Helpful?

Reviewer Ratings

How did it fit?

Very large

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