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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.

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: Regular Length and Regular Waist
Free standard delivery over €75

Reviews (49)

4.6

86% Recommended this product

Mentions
21 February 2026sillypenname

Good for tall teenagers

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good school trousers, have to order extra long long for my tall son with small waist. I do wish that they would start adding the actual leg length to description.

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

17 February 2026Kazz B

Replacement trousers

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good quality trousers, better material than some others. Bought to replace ones bought in September, would be good if knees had more reinforcment as thats the only issue.

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

09 February 2026Shop60

Good value for money.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good value for money. Last half the school year. Wash well and need little ironing.

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

04 February 2026yorkiebird

Great length for tall slim boy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Ideal fit for tall slim teenager grandson. He’s been wearing the same style most of his schooldays. Wash and wash with no problems.

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

02 February 2026Humpitybump

Long legg trousers.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

The trousers fit very well. They were bought gor school uniform. They are for a 6ft 15yr old so although the waist is a bit bigger than his the adjustable waistband works wonderfully. I would recommend these trousers to anyone.

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

27 January 2026rada_owl

Great option for the taller child!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These are the only school trousers (at a sensible price) that I could find to fit my slim, 6ft tall 12 year old. He is happy to wear them although finds the (pricier) adult trousers more comfortable in terms of the fabric quality and overall fit.

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

27 January 2026Tommy Bouton

Very slim son

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good quality. Good fit on my very slim son once the waist has been adjusted. It would be nice to be able to get a smaller waist in the Slim Leg, Longer Length trousers

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

26 January 2026SST3072

Great length

Originally posted on marksandspencer.com (UK)

Great length- love the adjustable waist as he is tall but has really long legs.

Reviewer Ratings

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True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

20 January 2026freshfashion

School uniform that survives our kids

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

School uniform I’ve always purchased and they have always been good quality

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

19 January 2026SAH38

Calling parents of tall boys!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Finally some school trousers that are long enough for my almost 6 foot 15 year old!

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

17 January 2026LilTJ

Great Quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good quality and great length, the only place I can seem to get them

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

16 January 2026Bluecat2925

Fantastic fit!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Finally found trousers to fit my 16yo 6’4 son. Length great & adjustable waist is so needed.

Reviewer Ratings

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True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 January 2026Ikpik

Right length for slim & tall 10 year old.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great to finally have a pair that fits length wise and isn’t too bulky around the waist. Child says they can still run and move in them (reason they don’t usually like trousers) and having warm ankles helps. Good quality.

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

10 January 2026DebbD

Good durable trousers

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

M&S school trousers are reliable and durable. The trousers are a good fit for a tall slim boy.

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

09 January 2026Ineedcomfort

Perfect, wash up lovely.

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Just what my son needed, school trousers wash well.

Reviewer Ratings

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True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

15 December 2025MumOfTallSon14

Just the extra length needed for a very tall boy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

As the mother of a very tall but very slim teenaged son, these trousers are a lifesaver. The extra 8 cm length are absolutely perfect, and the slim fit looks more professional for school than the super skinny trousers we tried that fit but just didn't quite look right as a school headline.

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

13 December 2025Sab1414

Great quality

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

These trousers are great quality and also have an adjustable waistband which is very helpful for a very tall slim 14-year-old.

Helpful?

12 December 2025

Boys Slim leg trousers

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely quality trousers, perfect fit especially as my son is tall and skinny for his age

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 December 2025Em269

Perfect for slim and tall children.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I am so grateful for the extra long option. My child has been wearing trousers that are too big on the waist in order to get the length. These trousers are perfect!

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

28 November 2025CK19

Great trousers at a great price

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These trousers are perfect for my son who is quite tall for his age. The fit is perfect and they have a real quality feel. The price is also great value.

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

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