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Speedo Quantum Contour One Piece

Product code: T138964

About this style

Make a splash in style with this eye-catching Quantum monochrome swimsuit from Speedo. It's crafted in a regular fit, to a contoured design that sculpts your silhouette. The non-padded, non-wired front ensures a natural shape, supported by the adjustable shoulder straps.

Speedo

Online only

Speedo Quantum Contour One Piece

Sorry, this item is no longer available

Reviews (12)

4.6

50% Recommended this product

Mentions
21 October 2026Misie

Not that flattering Speedo’s

No, I don't recommend this

I swim quite regularly so when I saw these reduced I bought them. Lovely quality material but not that flattering on I kept them as they were good value but definitely not the nicest Speedo togs that I have.

Reviewer Ratings

Quality

Good

Value for Money

Excellent

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Excellent

18 September 2026ErnieR

GREAT FUNCTIONAL SUIT

Originally posted on marksandspencer.com (UK)

HOLDS EVERYTHING WHERE IT SHOULD BE IN AQUA AEROBICS!

Helpful?

24 August 2026Katarina22

Excellent Buy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I always buy Speedo as the swimsuits last a long time as they don’t lose their shape. Great value as on sale.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

24 August 2026relaxed

Good quality materials. Comfortable.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good quality. Maintains its shape. Comfortable to wear

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Good

Material

Excellent

Style

Good

22 August 2026CN56

Good Quality swimwear. Good fit- comfortable.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I purchased swimsuit for swimming on holiday. I like the style and fabric. Exactly what I wanted.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Average

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Average

19 August 2026Taylor42made

Good quality swimsuit

Originally posted on marksandspencer.com (UK)

The swimsuit is fine - not what I would have chosen had my body shape not altered tremendously. However it serves the purpose and the quality is good.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

18 August 2026DiamondLill

Lovely Swimming Costume

Originally posted on marksandspencer.com (UK)

Very pleased with my purchase in a size 12 swimsuit in the current sale. Fits very well and I know with its chlorine resistant material it will last me a long time.

Reviewer Ratings

Style

Excellent

Helpful?

Reviewer Ratings

Style

Excellent

08 August 2026TJ E

Perfect for aqua class

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Didn’t realise that Speedo did a swimsuit with adjustable straps which I needed for extra bust support. Purchased for aqua classes and wanted something that fit well and chlorine resistant. It’s double lined and comfortable to wear in pool. No seams rubbing and stays in place during exercise. Far superior to costumes i’m using now. I bought a size 18, normal size and fits well, I have tightened the straps to the max as I am short but very comfy and keeps shape. Would buy again as far superior and hopefully last longer. My only downside is that I removed the small padding in the cups as they ended up crumpled when putting costume and would end up under armpit ! Easily removed and still fits fine though. Bonus I purchased in sale but would buy at full price.

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Excellent

Material

Excellent

Style

Excellent

25 July 2026AdrienneR

Lovely togs, great fit

Yes, I recommend this

Lovely togs, great fit. Would definitely buy again.

Helpful?

21 May 2026EllD

Ok

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Nice swimsuit with thick fabric but rides up on the buttocks so always hitching it back down.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

01 April 2026Golfgenius1

Baggy bottom (on me)

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Good swimsuit for aquasize apart from loose bottom of same

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Good

Material

Good

Style

Average

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

How did it fit?

Good

Value for Money

Good

Material

Good

Style

Average

01 March 2026MSshopper55

Good swimsuit, good fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Always buy Speedo as they last well with regular use in swimming pools. This one is good fit.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Material

Excellent

Style

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Material

Excellent

Style

Good

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