Marks & Spencer to DESCENTE size
The short answer
Marks & Spencer XS is DESCENTE S by the two brands' own charts. 5 of 5 Marks & Spencer sizes land on a different label at DESCENTE.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
On 2 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.
| Marks & Spencer | Marks & Spencer builds it for | DESCENTE Japan sizing, by chart | Same label | DESCENTE builds it for | DESCENTE also prints |
|---|---|---|---|---|---|
| XS | chest 32 to 34 in | S | not published | chest 33.5 to 35.8 in, waist 28 to 30.3 in | not published |
| S | chest 35 to 37 in | M | S | chest 35 to 37.4 in, waist 29.5 to 31.9 in | not published |
| M | chest 38 to 40 in | O | M | chest 38.2 to 40.6 in, waist 32.7 to 35 in | not published |
| L | chest 41 to 43 in | 2XO(XA) | L | chest 41.3 to 43.7 in, waist 35.8 to 38.2 in | not published |
| XL | chest 44 to 46 in | 2XO(XA) | not published | chest 41.3 to 43.7 in, waist 35.8 to 38.2 in | not published |
| XXL | chest 47 to 49 in | not made | not published | not published | not published |
| XXXL | chest 50 to 52 in | not made | not published | not published | not published |
| 4XL | chest 52 to 54 in | not made | not published | not published | not published |
What wearers say
Charts describe a garment, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.
Sources
- Marks & Spencer size guide, read on 2026-09-18.
- DESCENTE Japan sizing size guide, read on 2026-09-25.