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M&S

Cool Comfort™ Seamless Bum Boosting Shorts

£15

Colour

Customers say:

Fits true to size()
Waist

Free standard delivery over £60

Product code: T321563

About this style

These flattering shapewear shorts create a smooth silhouette while offering a subtle lift with removable bum-boosting pads. Made from lightweight fabric with our signature Cool Comfort™ technology, they're breathable for comfortable all-day wear. The seamless design with light control shaping eliminates visible knicker lines and smooths your figure, making them the perfect foundation beneath any outfit. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Details & care

Style

Removable padding

Control: Light control

Non wired

Added Stretch

Features

Lifts and enhances your bottom for a sculpted silhouette

Cool Comfort™ technology

keeps you cool all day long

Composition

90% polyamide, 10% elastane (exclusive of trimmings), Waistband - 84% polyamide, 16% elastane , Gusset (of underwear) - 81% polyamide, 11% cotton and 8% elastane

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Do not iron

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 (188)

3.8

58% Recommended this product

Mentions
02 January 2026her_
Verified Purchase

Great job M&S

Yes, I recommend this

I purchased 2 thinking they wouldn't be sufficient but wow - added perfect shape to my otherwise flat bottom so jeans hung beautifully and more comfortable to sit with cushioned support - perfect!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

30 December 2025shootingstar30
Verified Purchase

Fabulous, very sexy.

Yes, I recommend this

These are great for a special occasion. They give a nice shape under fitted clothes. I’m a woman of a certain age and lost the shape in my rear. I would definitely recommend them. Nice and light to wear, not hot like Spanx.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

29 December 2025LilyB63
Verified Purchase

Confidence Booster!

Yes, I recommend this

I've been struggling to regain my figure after unintential weight loss, and decided artificial enhancement was needed! Having read the mixed reviews for these pants I was hesitant to make a purchase, but for £15 I thought it was worth taking the risk, and I'm so glad I did! I've only worn them with black trousers so far, but I feel much more confident about my figure. They felt like I was wearing a pair of cycling shorts at first, but I got used to them after a while and they're very comfortable. Like a previous reviewer, I too am normally a size 10, but opted for the medium size, which fits nicely.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

28 December 2025Pink290672
Verified Purchase

Great quality

Yes, I recommend this

Does exactly as it says and is comfortable to wear, only down side is that I think it will be too hot in the summer and that's when you will use it the most

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

24 December 2025Trude21
Verified Purchase

Needs tweaking

I take a 10 in trousers. M fitted me lovely. S was on the tight side at the waist. BUT The inserts of the medium are way too big. They look enormous on my size 10 frame. The size of the inserts in S are much better, significantly smaller and suited my body size much better. Wish I could have chosen insert size. The inserts are separated quite a bit and look weird but as soon as trousers go on that is no longer an issue as it looks very natural.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

23 December 2025Isobella23
Verified Purchase

The BEST

Yes, I recommend this

Out of all that i have bought and now binned these are absolutely the best .Gives such a nice shape to your body.So happy i found these already bought 4.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 December 2025Llesley
Verified Purchase

Good padding

Yes, I recommend this

These shirts are providing the necessary comfort for me to sit down for Pilates 🧘‍♀️. I’d recommend them. However loose 1 star ⭐ for the waist band rolling down.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 December 2025Ditsy Blonde
Verified Purchase

Give a little extra oomph

Yes, I recommend this

These "bum boosters" help give my relatively flat bum a nice boost. I cheated a bit and put some extra soft padding in the pockets. Really easy to put on and comfortable and give a little extra oomph.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 December 2025
Verified Purchase

Move over Kim K

Yes, I recommend this

I laughed with surprise when I put these on. They really are incredibly convincing.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 December 2025lalala26
Verified Purchase

Do the job

Quite comfortable and do a fairly adequate job. Washed ok.

Helpful?

07 December 2025lurcher1
Verified Purchase

Happy!

Yes, I recommend this

These bum boosters are so comfortable to wear - I forget I have them on. I struggle to hold up my trousers/jeans, having a very flat ‘derrière’ but these improve the fit and create a much better silhouette. My dresses hang better too. They also wash well. I can thoroughly recommend - I’m thinking of buying more!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 November 2025Dj c
Verified Purchase

Bum boosting shorts

Yes, I recommend this

NICE FIT ,COMFORTABLE, BUT WONT USE THE BOTTOM PADS AS THEY GIVE MY BOTTOM A WEIRED SHAPE.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 November 2025HappyHome345
Verified Purchase

Gives good shape

Yes, I recommend this

Gives good shape under fitted dress. Light control, happy with overall look.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

27 October 2025Auntie_Em
Verified Purchase

Fabulous!

Yes, I recommend this

Firstly, I never write reviews so that alone is testament to how impressed I am with these bum rejuvenating pants! They are fabulous under my wide leg jeans and very comfortable considering I wear regular briefs underneath. I’m a size 10-12 with skinny legs, small (obviously flat-ish) backside and sadly a bit of a gut! Size medium was perfect for me. Added bonus - even wooden furniture is now comfortable to sit on! Result!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 October 2025Surrey Umbrella
Verified Purchase

I don't know anyone who has a bum this shape.

No, I don't recommend this

These are rather strange; their shape is unlike a real human bum, because the "cheeks" are quite seperate from each other. They're comfortable when standing but not when sitting because the waste band keeps on rolling down.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 October 2025SallyWebster
Verified Purchase

Great item but didnt use the pads

These are great but removed the bum pads as i didnt like them

Helpful?

12 October 2025Liloo
Verified Purchase

Projection, projection, projection ✨

Yes, I recommend this

Without the shadow of a doubt the best booty shorts out there. This is exactly the effect I was hoping for: projection in the medial pole area of my poor posterior. M&S worked hard on these and you can tell: the pads are meant to make one with your bum and not sit on top. The implants are nice and ergonomic, not round flying saucers just hovering. What would have made them perfect is (1) more sizes - an XS would have been nice (2) stronger support/compression everywhere else, are least a medium compression (3) ability to choose your pads separately. (4) While the pads are PERFECTION, I am wondering if it's feasible to make them in a gel ish consistency to mimic real body fat. I do appreciate there might be some weight considerations. Some bra gel pads are quite heavy already 😄 Still, despite its flaws and while I grow back my glutes at the gym, these are a treat. They have become part of me now.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

10 October 2025Kimbalina
Verified Purchase

Game changer!

Yes, I recommend this

I cannot believe this garment! I have spent many years hating the fact that I am minus a bum. These knickers / shorts solve my problem. I feel much better about myself in certain clothing. Love them and no surgery required 😂

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

29 September 2025Lara94
Verified Purchase

Shaping is odd

No, I don't recommend this

Thought this could be a good alternative to the Skims one but the padding and therefore shaping is very unflattering - pointy?!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

25 September 2025Iona1960
Verified Purchase

Bumtastic

No, I don't recommend this

Where have these been all my life🤪 finally I can wear jeans that look like they fit.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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