BFPack Flex

Woxer size	Waist	Hip	US Size
XS	24-26	35-36	0-2
S	26-28	37-38	4-6
M	29-31	39-40	8-10
L	32-34	41-43	12-14
XL	35-38	44-47	16
2XL	38-42	48-51	18-20
3XL	43-45	52-54	22-24
4XL	46-48	55-57	24-26

Woxer size	Bust	Underbust	US Size
S	30-32	26-27	4-6
M	33-35	28-29	8-10
L	36-37	30-31	12-14
XL	38-40	31.5-33	16
2XL	41-43	34-37	18-20
3XL	44-47	38-41	22-24

Woxer size	Bust	Waist	Hip
XS	28-30	24-26	22
S	30-32	26-28	22.5
M	33-35	29-31	23
L	36-37	32-34	23.5
XL	38-40	35-38	24-24.5
2XL	41-43	38-42	25
3XL	44-47	43-45	25.5
4XL	48-51	46-48	25.5

Length - Measure the distance from the base of your neck to the base of the tank top.
Bust - Measure under your arms and around the fullest part of your chest. Make sure the tape measure is level and snug, but not tight.
Waist - Measure your natural waistline at or just above belly button level.