Next to Gymshark size
The short answer
Next S is Gymshark XS by the two brands' own charts. 3 of 5 Next sizes land on a different label at Gymshark.
Both brands publish the body chest each size is cut for, so every row matches a chest, not a letter.
| Next | Next builds it for | Gymshark, by chart | Same label | Gymshark builds it for | Gymshark also prints |
|---|---|---|---|---|---|
| XXS | chest 30 to 32 in | not made | not published | not published | not published |
| XS | chest 33 to 35 in | not made | XS | not published | not published |
| S | chest 36 to 38 in | XS | S | chest 37 in, waist 29.5 in | not published |
| M | chest 39 to 41 in | S or M | M | chest 39 in, waist 31.5 in | not published |
| L | chest 42 to 44 in | L | L | chest 43 in, waist 35.5 in | not published |
| XL | chest 45 to 47 in | XL or XXL | XL | chest 45 in, waist 37.5 in | not published |
| 2XL | chest 48 to 50 in | XXXL | XXL | chest 49 in, waist 41.5 in | not published |
| 3XL | chest 51 to 53 in | not made | XXXL | not published | not published |
| 4XL | chest 54 to 56 in | not made | not published | not published | not published |
| 5XL | chest 57 to 59 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
- Next size guide, read on 2026-09-18.
- Gymshark size guide, read on 2026-09-18. Gymshark on TrueToSize