Year of Ours to Gymshark leggings size

The short answer

Year of Ours Extra Small is Gymshark XS by the two brands' own charts. 5 of 5 Year of Ours sizes land on a different label at Gymshark.

Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.

Every Year of Ours size read across to Gymshark. Letter sizes on the left, Letter on the right.
Year of Ours	Year of Ours builds it for	Gymshark, by chart	Same label	Gymshark builds it for	Gymshark also prints
Extra Small	waist 25 to 26.5 in, hip 35 to 37 in	XS	not published	waist 26 in, hip 37.5 in	US numeric 4-6
Small	waist 27 to 28 in, hip 38 to 40 in	S	S	waist 28 in, hip 39.5 in	US numeric 6-8
Medium	waist 29 to 32 in, hip 41 to 43 in	M	M	waist 30 in, hip 41.5 in	US numeric 8-10
Large	waist 33 to 35 in, hip 44 to 46 in	XL	L	waist 34 in, hip 45.5 in	US numeric 12-14
Extra Large	waist 36 to 38 in, hip 47 to 49 in	XXL	not published	waist 36 in, hip 47.7 in	US numeric 14-16
2X	waist 39 to 41 in, hip 50 to 52 in	not made	not published	not published	not published

Tinted rows change label or sit between two sizes. 1 sizes have no counterpart on the Gymshark chart. Read from the two charts only; no formula and no averaging.

What wearers say

Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.

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Sources

Year of Ours size guide, read on 2026-09-18.
Gymshark size guide, read on 2026-09-17. Gymshark on TrueToSize

Gymshark to Year of Ours