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3pk Heavy Absorbency Modal Period Bikini Knickers

Product code: T617955P

About this style

These period bikini knickers are made from luxuriously soft, modal-rich fabric for ultimate comfort during your cycle. Featuring a low-rise waist, the three-pack offers reliable heavy absorbency with specially developed three-layer gussets that effectively draw moisture away. Flexifit™ technology ensures these M&S Collection knickers move with you, providing confidence and ease throughout the day. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

M&S

3pk Heavy Absorbency Modal Period Bikini Knickers

£20

Colour

Customers say:

Fits true to size()
Size

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

Reviews (32)

4.3

88% Recommended this product

Mentions
12 March 202687laura
Verified Purchase

Does the job

Yes, I recommend this

First time ever trying this product. Didn’t disappoint, great quality, comfortable and washes well. I am now a convert. Brilliant way to reduce single use sanitary wear and these are more comfortable to wear also ! Win win

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 March 2026LastMinuteLizzie
Verified Purchase

Great Product

Yes, I recommend this

My teenage daughter loves these. Very comfortable and practical. They was and tumble dry well too.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 March 2026Sanlypa
Verified Purchase

Absolute bargain

Yes, I recommend this

I got them on sale, as I had previously bought a different style from M&S and quite liked them. I have to say I am very pleased with the fit and quality. They are very comfy. I would definitely recommend.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

05 March 2026Pilchy
Verified Purchase

Comfy and stylish.

Yes, I recommend this

Very comfy and stylish pants. Did not buy for their 'intended' purpose but because they have a decent size gusset. I am a size 8 and don't like big pants but all the skimper pants have almost none existent gusset. Only issue a panty liner which I like to use doesn't seem to adhere very well to the gusset fabric otherwise would have given 5 stars. . However, would buy again.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 February 2026Villy from Cambridgeshire
Verified Purchase

Best period pants

Yes, I recommend this

These are the best period pants bought from M & S. They are comfy, well made and great for coping with leaks of any kind ! I have bought high waisted in the past but these are a much better fit. A selection of colours would be welcome.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

28 January 2026Katiecardigan
Verified Purchase

They do the job.

Yes, I recommend this

These are my favourite underwear. Stops any embarrassing issues from stress incontinence. For everyday living these cope with all eventualities for period days or stress incontinence. I use these if i know i am going to be busy all day or enjoying exercise. However, probably not sufficient for trampolining!!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

25 January 2026Bozena11
Verified Purchase

Just what you need!

Yes, I recommend this

Something you need and really good value for money.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

21 January 2026Blondje
Verified Purchase

Not worn yet

Yes, I recommend this

Can’t comment on these as given to my daughter who suffers heavy periods, and she not worn them yet. They are quite thick and looks as if plenty of stretch . Thick gusset .

Helpful?

21 January 2026Mercy Dash
Verified Purchase

Not suitable for heavy flow but otherwise great.

Yes, I recommend this

These are great for light to normal flow but they unfortunately I put too much faith in them and they let me down by considerable leaking within 2 hours of wearing them with a heavy flow, having to make a dash for home to change. M&S and I have different ideas about what constitutes as a “heavy” flow.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

18 January 2026Christmas1225
Verified Purchase

Looks good

Yes, I recommend this

Have tried Mark's period pants before so i think these will be alright.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 January 2026cutadash
Verified Purchase

Good quality knicker

Yes, I recommend this

Very good product comfortable true to size.Just one criticism,i wish the main part of the knicker was of a more cotton construction.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 January 2026C T 4
Verified Purchase

Period pants for heavy flow

Yes, I recommend this

Exellent for heavy flow, very comfortable and smooth under clothes , ideal for day or night and especially when ‘waiting’ for period

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

25 December 2025Doyle
Verified Purchase

Ridiculous placement of a very long tag

Originally posted on marksandspencer.ie

No, I don't recommend this

The tag for these knickers are in the middle at the back and they are about 4 inches long. I tried cutting them off but it left an uncomfortable notch, so when I cut a little more I ended with a hole in the seam. Why would the tag not be on the side like every other pair of knickers in the world!!

Helpful?

12 December 2025Ruthiebabe52
Verified Purchase

Great Pants

Yes, I recommend this

Love these bikini pants they are so good if you have an accident have about 9 pairs of them now wash up well

Helpful?

04 December 2025Nanna20
Verified Purchase

Modern girls

Yes, I recommend this

My granddaughter requested these second order. They give her confidence at school when she has her period and access to toilets are limited.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

27 November 2025Ellen reveals
Verified Purchase

Work as advertised. I am a convert to period pants

Yes, I recommend this

Comfortable, wash easy and dry quickly. I have confidence in the absorption.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 November 2025Sab4646
Verified Purchase

Terrible absorbency

No, I don't recommend this

I am so disappointed in these! I bought three packs after reading a review in a newspaper and these came out on top. I do not have a heavy flow and these leaked at a ridiculous rate. I need to find out if I can have a refund. What a waste of money.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 November 2025Gill606
Verified Purchase

As described

Yes, I recommend this

Good. Nice material. Works well. Fits okay. Black high leg size 16

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 November 2025L879654
Verified Purchase

Great But

Yes, I recommend this

I love this product and actually wear it every day - not just for period. As a women of a certain age gives me the confidence to just carry on.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

30 October 2025AnamikaV
Verified Purchase

best product ever

Yes, I recommend this

Best n essential Period product. I am using for both me n my daughter.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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