John Lewis Boys' Pure Cotton Adjustable Waist Straight Leg School Trousers, Black, Black

Product information

  • Straight leg fit
  • Pure 100% cotton fabric
  • Comfortable and breathable
  • Will fit most body shapes
  • Pleated front with crease leg 
  • Adjustable waist
  • Belt loops
  • Slanted front pockets
  • Back welt zipped pocket
Our straight leg range of school trousers offer a smart look that will suit most body shapes.
Made from a pure 100% cotton fabric, these trousers are made for comfort and breathability for those long demanding school days.
These trousers boast a straight leg cut and pleated front with crease leg. They also feature slanted front pockets and a back welt zipped pock.
All of our trousers feature an adjustable waist and belt loops that help to ensure a great fit as they grow.
Easier dressing for ages 3-6 - It’s easier than ever to get your little one dressed for school. All of our trousers for ages 3 to 6 are ‘pull-on’. They feature a mock-fly fastening so they look the part. 
John Lewis
Eligible for International Delivery
100% cotton
Washing Instructions
Machine washable at 40°C

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Schoolwear Size Guide

Schoolwear Size Guide

Advice on choosing schoolwear, including measuring your child

Size Guide

Boys' Trousers Size Guide
Age Height Waist Regular inside leg
3 98cm / 38.5" 51cm / 20" 42.5cm / 16.75"
4 104cm / 41" 52cm / 20.5" 45.5cm / 18"
5 110cm / 43.25" 54.5cm / 21.5" 48.5cm / 19"
6 116cm / 45.5" 55.5cm / 21.75" 52cm / 20.5"
7 122cm / 48" 56.5cm / 22.75" 55.5cm / 21.75"
8 128cm / 50.5" 58cm / 23" 59cm / 23.25"
9 134cm / 52.75" 60cm / 23.5" 62.5cm / 24.5"
10 140cm / 55" 62cm / 24.5" 66cm / 26"
11 146cm / 57.5" 64.5cm / 25.25" 69.5cm / 27.25"
12 152cm / 60" 67cm / 26.25" 73cm / 28.75"
13 158cm / 62" 69.5cm / 27.25" 76cm / 30"
14 164cm / 64.5" 74cm / 29" 79cm / 31"
15 170cm / 67" 77cm / 30.25" 81cm / 31.75"
16 176cm / 69.25" 77cm / 30.25" 84cm / 33"
16+ 184cm / 72.5" 82cm / 32.25" 87cm / 34.75"

The measurements shown on the size chart are body measurements. These are average measurements for guidance to determine which size is right.
Please note, actual measurements may vary slightly by style.



We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.

Q & As

Rated 3.4 out of 5 by 10 reviewers.
Rated 1 out of 5 by Terrible Quality I buy a lot from John Lewis. I love the quality and service but I can honestly say these are the worst items I have bought from them and, indeed, the worst school trousers I have bought from anywhere. The grey is lighter than the picture (I can live with that). They crease badly, iron badly (these are the only school trousers that actually have to be ironed that I have bought) and they look really scruffy. This is the first time that I have given JL less than 5 stars for anything. I have purchased other JL school trousers previously but they were not in stock. Although I purchased 3 and they fit my son I am considering just throwing them away. 26 November 2015
Rated 5 out of 5 by Superb but high maintenance Always try to have a variety of school trousers for my son and was pleased to find these, very soft, light and easy wearing. Ordered for 8 year old (size 9) waist perfect with growing room the legs however were longer than usual/expected, kept them and had the legs shortened by 2-3 inches as was impressed with the quality. Just a little advice make sure you have a lint roller handy as they seem to be a magnet for attracting small particles, need a quack brush before leaving the house and they take a little longer to iron. But they are fab and would recommend as a top up pair coupled with JL easy care pairs which are sensational. 15 October 2015
Rated 2 out of 5 by Disappointing fit I ordered these one by one in various sizes due to the stock issues, and without a clue which size would be right for my son (JL clothes are usually a generous fit on him). He is pretty much average sized for age 4 (4.4) but these came up huge! The length of the age 3 were ok, but the fit was way too baggy and they looked ridiculous (exactly the clown trousers another reviewer described). I returned the lot! These desperately need a slim fit alternative please - it's proving very tricky to find eczema-friendly trousers that fit. 05 September 2015
Rated 5 out of 5 by Cotton school trousers Cotton school trousers, that fit well and last!Fab 06 August 2015
Rated 5 out of 5 by Great product! Good quality, good fit, good price! Have been buying these for years. Highly recommended, especially compared to other cotton school trousers on the market. 28 July 2015
Rated 4 out of 5 by Be careful with the sizing though Having read previous reviews I sized up when buying these trousers for my very tall son. He is 4.5 but the height of an average 5.5 year old. The size 6 trousers swamped him, and even the size 5 ones will still need taking up a little in the leg for him to wear. The fit is otherwise good on him as he is well built and prefers clothes loose, but if your child is on the slim side then they will probably look like clown trousers. All things aside it is refreshing to find 100% cotton trousers (essential for itchy eczema prone legs) at a reasonable price. Thank you :-) 02 July 2015
Rated 2 out of 5 by Used to love these trousers Something about the design of these trousers seems to be changing. Recently, some of them are coming up smaller, and with less elastic in the waist. This means I have some trousers that are stated as being for age 12 but are noticeably smaller in the waist than some age 11 pairs. I usually have to buy a few pairs of these at the same time (as they’re not available all year round) and have some in a year older than immediately needed so they are there ready as my son grows, but I now find I can’t rely on there being any consistency in fit or sizing. It’s a shame as John Lewis seems to be the only place to sell 100% cotton school trousers, which we really need as my son suffers from eczema. Really disappointed as overall everything else about these trousers is brilliant and now I don’t know where else to look. 11 June 2015
Rated 3 out of 5 by Need a slim leg cotton boys school trouser Really good to see a quality cotton boys trouser for sale. Unfortunately these were far to baggy in the leg for my slim son. Can we have a slim leg cotton school trouser? 05 August 2014
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