Genuine Swiss Surplus in the more uncommon here in the sates Taz 90 alpenflage pattern. Since these are overpants, they have a fully elastic waist and can size down a lot with the button adjustments in the waist. These have been previously issued and may show signs of wear or repair but still are in great condition.
The Swiss system of measurements has first the waist circumference of the trousers divided by two, then the inseam length, both in centimeters.
