Please select one size bigger if you want regular.
US Small=China M:Length:14.57"(37cm),Waist:34.65"(88cm)
US Medium=China L:Length:14.96"(38cm),Waist:36.22"(92cm)
US Large=China XL:Length:15.35"(39cm),Waist:37.80"(96cm)
US X-Large=China 2XL:Length:15.75"(40cm),Waist:39.37"(100cm)