WW2 U.S. first aid (in brown sleeve)

WW2 U.S. first aid dressing, packed in double brown carton sleeve

Description / purpose:
kind of rubberized material used for the first aid dressing.
First aid dressing is protected with a brown carton sleeve and this goes in another brown sleeve, so that all 4 sides of the first aid dressing are protected.

Markings: no markings on brown sleeve carton, but first aid package full with manufacturer details and instructions for use.
Condition: never used