Slim Style Boys' School Trousers – 100% Organic Cotton
SKU: SKU:BWTSL-Grey-3 - 4
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Made from 100% GOTS-certified organic cotton, our slim style boys' school trousers are naturally breathable, soft and comfortable for all-day school wear. Designed specifically for slender boys, the slim style features the same practical design as our classic fit trousers but with a narrower, more tapered leg for a smarter, slimmer silhouette.
Children aged 3–6 years benefit from an easy hook fastening, while sizes 7–8 years and above feature a zip and hook fastening for a more traditional school trouser.
A concealed adjustable elastic waistband allows the fit to be customised as children grow, providing extra comfort throughout the school year.
Unlike many conventional school trousers, ours are made from pure organic cotton without synthetic fibres or PFAS-based stain-resistant coatings.
Key Features
- 100% GOTS-certified organic cotton
- Designed for slender boys
- Narrower, more tapered leg than our Classic Fit trousers
- Smart centre crease
- Adjustable waistband for a comfortable fit
- Hook fastening (sizes 3–6)
- Zip and hook fastening (sizes 7–8 and above)
- Naturally breathable and PFAS-free
- Available in Grey, Charcoal, Navy and Black
- Ethically and responsibly made
Size Guide: Click here to view Size Chart
Delivery and Returns: Click to read Policy
Garment Information: Click to read Policy
Size Guide Boys
| Age (years) | 2-3 | 3-4 | 4-5 | 5-6 | 6-7 | 7-8 | 8-9 | 9-10 | 10-11 | 11-12 | 12-13 | 13-14 | 14-15 | 15-16 | 16-17 (M) | 17-18 (L) | |
| Height | cm | 100 | 104 | 110 | 116 | 122 | 128 | 134 | 140 | 146 | 152 | 158 | 164 | 170 | 176 | 178 | 180 |
| inches | 39½" | 41" | 43½" | 45½" | 48" | 50½" | 53" | 55" | 57½" | 59" | 62" | 64½" | 67" | 69¼" | 70" | 71" | |
| Chest | cm | 54 | 56 | 58 | 60 | 62 | 64 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 99 | 104 |
| inches | 21¼" | 22" | 23" | 23½" | 24½" | 25" | 26" | 27½" | 29" | 30½" | 32" | 34" | 35½" | 37" | 39" | 41" | |
| Waist (Classic Fit) | cm | 52 | 53.5 | 55 | 57 | 58 | 60 | 62 | 64 | 66 | 68 | 70.5 | 73 | 76.5 | 81 | 86 | 91 |
| inches | 20½" | 21" | 21½" | 22½" | 23" | 23½" | 24½" | 25" | 26" | 27" | 28" | 29" | 30" | 32" | 34" | 36" | |
| Waist (Slim Fit) | cm | 47 | 49 | 50 | 52 | 53 | 55 | 57 | 59 | 61 | 63 | 66 | 69 | 72 | 76 | 81 | 86 |
| inches | 18½" | 19½" | 19¾" | 20½" | 21" | 21½" | 22½" | 23" | 24" | 25" | 26" | 27" | 28½" | 30" | 32" | 34" | |
| Collar | cm | 28 | 28 | 28 | 29 | 30 | 30 | 31 | 32 | 33 | 34 | 36 | 37 | 38 | 39 | 41 | 42 |
| inches | 11" | 11" | 11" | 11½" | 11¾" | 11¾ | 12" | 12½" | 13" | 13½" | 14" | 14½" | 15" | 15½" | 16" | 16½" |
Size Guide Girls
| Age (years) | 3-4 | 4-5 | 5-6 | 6-7 | 7-8 | 8-9 | 9-10 | 10-11 | 11-12 | 12-13 | 13-14 | 14-15 | 15-16 | 16-17 (S) | 17-18 (M) | |
| Height | cm | 104 | 110 | 116 | 122 | 128 | 134 | 140 | 146 | 152 | 158 | 164 | 168 | 170 | 172 | 174 |
| inches | 41" | 43½" | 45½" | 48" | 50½" | 53" | 55" | 57½" | 60" | 62" | 64½" | 66" | 67" | 67¾" | 68½" | |
| Chest | cm | 55 | 57 | 59 | 61 | 63 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 99 | 104 |
| inches | 21½" | 22½" | 23" | 24" | 24¾" | 26" | 27½" | 29" | 30½" | 32" | 34" | 35½" | 37" | 39" | 41" | |
| Waist | cm | 53.5 | 55 | 57 | 58 | 59 | 61 | 62 | 63 | 64 | 65.5 | 67 | 71 | 73 | 75 | 80 |
| inches | 21" | 21½" | 22½" | 22¾" | 23" | 24" | 24½" | 24¾" | 25¼" | 26" | 26½" | 28" | 28¾" | 29½" | 31½" | |
| Collar | cm | 28 | 28 | 29 | 30 | 30 | 31 | 32 | 33 | 34 | 36 | 37 | 38 | 39 | 41 | 42 |
| inches | 11" | 11" | 11½" | 11¾" | 11¾" | 12" | 12½" | 13" | 13½" | 14" | 14½" | 15" | 15½" | 16" | 16½" |
Size Guide Dual Sizes
| Age (years) | 3-4 | 5-6 | 7-8 | 9-10 | 11-12 | 13-14 | |
| Height | cm | 104 | 116 | 128 | 140 | 152 | 164 |
| inches | 41" | 45½" | 50½" | 55" | 60" | 64½" | |
| Chest | cm | 56 | 60 | 64 | 69 | 78 | 86 |
| inches | 22" | 23½" | 25" | 27" | 30½" | 34" | |
| Waist | cm | 52 | 56 | 58 | 62 | 68 | 73 |
| inches | 20½" | 22" | 23" | 24½" | 27" | 28½" |
Size Guide socks
| Kids | Kids | Kids | Adult | Adult | Adult | |
| UK | 6-8 | 8-12 | 12-3 | 3-5 | 6-8 | 9-11 |
| EU | 22-24 | 25-29 | 30-34 | 35-37 | 38-41 | 42-45 |
| US/CANADA-WOMEN | 7-9 | 9-13 | 13-4 | 5-7 | 8-10 | 11-13 |
| US/CANADA-MEN | 7-9 | 9-13 | 13-4 | 4-6 | 7-9 | 10-12 |
Size Guide Tights
| Age | 4-5 years | 6-7 years | 8-9 years | 10-11 years | 12-13 years | 15-16 years |
|---|---|---|---|---|---|---|
| Height | 110 cm | 120 cm | 130 cm | 140 cm | 152 cm | 164 cm |
Size Guide Underwear
| Size | 3-4 | 5-6 | 7-8 | 9-10 | 11-12 | 13 | |
| Height | cm | 104 | 116 | 128 | 140 | 152 | 164 |
| inches | 41" | 45½" | 50½" | 55" | 59" | 64½" | |
| Waist | cm | 52 | 56 | 58 | 62 | 68 | 73 |
| inches | 20½" | 22" | 23" | 24½" | 27" | 28½" |