Lululemon to POPFLEX leggings size
The short answer
lululemon 10 is POPFLEX M by the two brands' own charts.
Both brands publish the body waist each size is cut for, so every row matches a waist, not a tag.
| lululemon | lululemon builds it for | POPFLEX, by chart | Same label | POPFLEX builds it for | POPFLEX also prints |
|---|---|---|---|---|---|
| 0 | waist 21 in, hip 32 in | XXS | not published | waist 22 to 24 in, hip 32 to 34 in | not published |
| 2 | waist 23 in, hip 33 in | XXS | XXS | waist 22 to 24 in, hip 32 to 34 in | not published |
| 4 | waist 25 in, hip 35 in | XS | XS | waist 24 to 26 in, hip 34 to 36 in | not published |
| 6 | waist 27 in, hip 37 in | S | S | waist 26 to 28 in, hip 36 to 38 in | not published |
| 8 | waist 29 in, hip 39 in | M | M | waist 28 to 31 in, hip 38 to 40 in | not published |
| 10 | waist 31 in, hip 41 in | M | L | waist 28 to 31 in, hip 38 to 40 in | not published |
| 12 | waist 33 in, hip 43 in | L | XL | waist 31 to 34 in, hip 40 to 43 in | not published |
| 14 | waist 35 in, hip 45 in | XL | not published | waist 34 to 38 in, hip 43 to 47 in | not published |
| 16 | waist 38 in, hip 47 in | XL | not published | waist 34 to 38 in, hip 43 to 47 in | not published |
| 18 | waist 41 in, hip 49 in | 1X | not published | waist 38 to 42 in, hip 48 to 52 in | not published |
| 20 | waist 43 in, hip 51 in | 2X | not published | waist 42 to 46 in, hip 52 to 56 in | not published |
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.
Sources
- lululemon size guide, read on 2026-09-17. lululemon on TrueToSize
- POPFLEX size guide, read on 2026-09-18.