Check the correspondence with your usual pant size. If you are between two sizes, choose the larger size to be more comfortable.

BIOpads US/CA UK/AU EU Waist (in) Hips (in) Waist (cm) Hips (cm)
XS 2 6 34 23–25 35–36 60–64 90–94
S 4 8 36 25–26 37–38 64–68 95–98
M 6 10 38 26–28 39–40 68–72 99–103
L 8 12 40 28–30 41–42 72–76 104–108
XL 10 14 42 30–31 43–45 76–80 109–113
2X 12 16 44 31–33 46–47 80–84 114–120
3X 14 18 46 33–35 48–49 84–88 121–127
4X 16 20 48 35–36 50–52 88–92 128–133
5X 18 22 50 36–38 53–54 92–96 134–139
6X 20 24 52 38–40 55–57 96–100 140–145

Body measurements, not garment measurements. If you are between two sizes, choose the larger size for comfort.