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Marks & Spencer's general size chart and the suits and separates we list. Check the guide attached to each garment: chart families can differ.
Find his sizeShowing all 5
Other listed colours: Air Force Blue
Marks & Spencer · trousers only
Includes: Trousers
Fits 92–164 cm
Check total at Marks & Spencer (opens in a new tab)Other listed colours: Indigo
Marks & Spencer · trousers only
Includes: Trousers
Fits 92–164 cm
Check total at Marks & Spencer (opens in a new tab)Marks & Spencer · trousers only
Includes: Trousers
Trousers only; pair with a tuxedo jacket.
Fits 116–164 cm
Check total at Marks & Spencer (opens in a new tab)Other listed colours: Air Force Blue
Marks & Spencer · jacket only
Includes: Jacket
Fits 92–164 cm
Check total at Marks & Spencer (opens in a new tab)Other listed colours: Indigo
Marks & Spencer · jacket only
Includes: Jacket
Fits 92–164 cm
Check total at Marks & Spencer (opens in a new tab)| Item | Fits height | Price | Where to buy |
|---|---|---|---|
Suit Trousers, Indigo (2–16 Years)Marks & Spencer. Includes: Trousers | 92–164 cm | From £18+£3.99 home delivery · free collection where offered | Check total at Marks & Spencer (opens in a new tab) |
Suit Trousers, Air Force Blue (2–16 Years)Marks & Spencer. Includes: Trousers | 92–164 cm | From £18+£3.99 home delivery · free collection where offered | Check total at Marks & Spencer (opens in a new tab) |
Tuxedo Suit Trousers (6–16 Years)Marks & Spencer. Includes: TrousersTrousers only; pair with a tuxedo jacket. | 116–164 cm | £22+£3.99 home delivery · free collection where offered | Check total at Marks & Spencer (opens in a new tab) |
Suit Jacket, Indigo (2–16 Years)Marks & Spencer. Includes: Jacket | 92–164 cm | From £36+£3.99 home delivery · free collection where offered | Check total at Marks & Spencer (opens in a new tab) |
Suit Jacket, Air Force Blue (2–16 Years)Marks & Spencer. Includes: Jacket | 92–164 cm | From £36+£3.99 home delivery · free collection where offered | Check total at Marks & Spencer (opens in a new tab) |
Marks & Spencer. Includes: Trousers
Marks & Spencer. Includes: Trousers
Marks & Spencer. Includes: Trousers
Trousers only; pair with a tuxedo jacket.
Marks & Spencer. Includes: Jacket
Marks & Spencer. Includes: Jacket
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Confirm current prices, delivery and stock at the retailer.
| Size | Fits height up to (cm) | Chest (cm) | Waist (cm) |
|---|---|---|---|
| 2–3 yrs | 98 cm | 54 cm | 52 cm |
| 3–4 yrs | 104 cm | 56 cm | 54 cm |
| 4–5 yrs | 110 cm | 58 cm | 55 cm |
| 5–6 yrs | 116 cm | 60 cm | 56 cm |
| 6–7 yrs | 122 cm | 63 cm | 57 cm |
| 7–8 yrs | 128 cm | 65 cm | 59 cm |
| 9–10 yrs | 140 cm | 70 cm | 62 cm |
| 11–12 yrs | 152 cm | 76 cm | 67 cm |
| 13–14 yrs | 164 cm | 82 cm | 72 cm |
| 15–16 yrs | 176 cm | 88 cm | 77 cm |
Source: Transcribed from M&S's online boys' size guide, checked 10 Nov 2026. Recorded chart values in whole cm; inches are approximate. Confirm the current item guide and offered sizes before ordering; this chart is not a fit or stock guarantee.
Compare his chest measurement with the chart for the size you plan to order.