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2 Pack Boys' Slim Leg Longer Length School Trousers (2-18 Yrs)

Product code: T764768L

About this style

Slim-leg school trousers designed for growing children in a practical two-pack. The adjustable waist ensures a comfortable fit, while crease-resistant technology and stain-repellent finish keep them looking smart throughout busy school days. With hems that can be extended by 3cm, these longer-length trousers adapt as they grow.

Sizes from two to six years have an elasticated waistband. Sizes from six to 10 years have an elastic back with a hook, bar and zip, while sizes from 10 years have a hook, bar and zip. The clever grow-proof hems can be unpicked and pressed for an extra 3cm of length when needed, helping trousers last longer as your child grows.

Details & care

Style

Slim leg

Safety Warning

Keep away from fire

Features

Stain & Weatherproof

a durable finish that repels water and stains

Crease-resistant technology

Hem can be unpicked and let down a further 3cm to allow for growth

An adjustable waist promises extra comfort

Composition

65% polyester, 35% viscose (exclusive of trimmings), Pocketing (pocket fabric composition) - 100% polyester

Care

Wash at 40°C delicate

Do not bleach

Tumble dry medium temperature

Iron at medium temperature

Professional dry clean

M&S

Online only

2 Pack Boys' Slim Leg Longer Length School Trousers (2-18 Yrs)

€14 - €22

Colour

Waist

Inside Leg

Also available in: Standard Length
Free standard delivery over €75

Reviews (84)

4.7

86% Recommended this product

Mentions
22 July 2026MrsGoodShopper

Excellent for slim childern

Originally posted on marksandspencer.com (UK)

Great for slim boys. Most trousers are way too big on the waist and hips for my grandson. I bought a younger age with longer legs and they fit perfectly. Glad m&s are still doing this range which I first bought a few years ago for my grandaughters.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

16 July 2026TubbyH

Great buy at a very good price.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

We always buy our Grandsons school trousers from M&S and as usual they are good quality, hard wearing and stylish.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

12 July 2026Frankie2105

Great quality, great price

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I bought these for my 11 year old son, he is very slim so we always opt for a slim fit. The trousers are great value and quality for a school trouser. Only reason i didnt go for 5 stars was i found them still a little bit in the waist even fully adjusted but my son would be quite petit in the waist.

Reviewer Ratings

How do you feel about the size?

A bit large

Value for Money

Excellent

Style

Excellent

Material

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

Value for Money

Excellent

Style

Excellent

Material

Good

06 July 2026ruth9

Perfect

Yes, I recommend this

Great quality trousers. Good value for money & look good too

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

30 June 2026NDG18

Perfect fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Perfect fit based on the size guide. Good quality and value for money

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

21 June 2026Batgirl70

Great length.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These school trousers are perfect. My son is getting so tall but is very slim. The trousers are a perfect length but I think I will be buying the extra long soon. I could do with black joggers in long and extra long too

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Fair

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Fair

13 June 2026LMK12

Perfect quality and fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Brilliant range of options with the school trousers at Marks. Now my child has had a growth spurt, but remains the same size at the waist, we are really grateful for this longer length option!

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Material

Excellent

07 June 2026Netty09

School uniform

Originally posted on marksandspencer.com (UK)

Good choice, longer lengths available which is good.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Material

Excellent

05 June 2026MSE816

Great trousers but shorter than expected

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

The trousers seem to be good quality, however, they’re about an inch shorter than expected. It says in the size chart that the longer length trousers come with 31” length but the ones I’ve got are only 30 inches long, but because my son needed them I decided to keep them. Hence the 4 stars.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

01 June 2026Cwils82

Perfect for thr lanky stage.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Love the long length and extra couple of inches for when they grow again. Just let the hems down. Also love the adjustable waist.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Average

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Average

Material

Excellent

01 June 2026JennaW22

Great idea for a really tall and slim 14 year old

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Perfect for a very tall, slim 14 year old, I struggle to find trousers that fit him without having to go to the mens section, these extra long trousers are great as you can let the hem down progressively.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

31 May 2026MsAnnika

Good quality and fit

Originally posted on marksandspencer.com (UK)

Comfortable and good quality. Washes well and easy iron. My son prefers these to other brands I’ve bought before.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Excellent

Material

Excellent

27 May 2026Colleen81

Great product for tall young teen!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great fit for a tall 12 year old. Thankful for the adjustable waist.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

25 May 2026Mama_c

Great school clothes

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Always buy school clothes from M&S. They fit well, they was well and they seem to last longer

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

25 May 2026Max5

Perfect fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Perfect school trousers, so pleased I found these trousers, after trying lots of other styles most were huge on the waist and bottom area. These are perfect for a tall, very slim boy, i ordered a size 14 to 15yrs which he had out grown, but finding these in the same waist size but longer length was the perfect fit at last. Thank you

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Excellent

Material

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Excellent

Material

Good

21 May 2026XHHS

Great quality and perfect for fast‑growing teens

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I’m really happy with this Slim Leg Longer Length School Trousers. They’re perfect for teenagers who grow quickly, as the longer length gives a bit more room before needing the next size. The adjustable elastic waistband is very practical too. The quality is great. I’ll definitely repurchase.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Good

Material

Excellent

21 May 2026shoppingforson

Perfect school uniform

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These wash and wear so well. And the bonus of extra hidden turn up to turn down the length is great for growing teenagers. And adjustable waist is essential for my skinny teen. Thanks.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

17 May 2026Mr Sam10 G

Good quality and fair price

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good quality and fair price - good for kids schoolkit

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

17 May 2026Sandra V Molloy

Smart trousers

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Beautiful smart trousers for school and perfect length

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

15 May 2026Highbury51

School trousers

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great fit and good quality material. Would recommend these trousers for your teenager.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

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