Layered thumbhole structure

A tubular sleeve having a distal end opposite a proximal end, the distal end having a distal edge defining a primary sleeve aperture, the tubular sleeve comprising:

• a first panel having a first longitudinal edge and a second longitudinal edge;
• a distal strap affixed to the first panel at a first portion of the first longitudinal edge and at a first portion of the second longitudinal edge, the distal strap having a distal strap trailing edge extending between the first longitudinal edge and the second longitudinal edge;
• an anterior patch affixed to the first panel at a second portion of the first longitudinal edge and at a second portion of the second longitudinal edge, the anterior patch having an anterior patch leading edge extending between the first longitudinal edge and the second longitudinal edge, wherein the distal strap trailing edge overlaps the anterior patch leading edge between the first longitudinal edge and the second longitudinal edge when the tubular sleeve is in a first in-use configuration, and wherein the distal strap trailing edge and the anterior patch leading edge each have respective central portions that are not directly affixed to one another, wherein the distal strap trailing edge and the anterior patch leading edge define, at least in part, a secondary sleeve aperture;
• and
• a sheath having an outer surface directly affixed to an interior surface of the tubular sleeve, wherein the sheath is maintained with an interior volume of the tubular sleeve when the tubular sleeve is in the first in-use configuration, and wherein the sheath extends out of the secondary sleeve aperture when the tubular sleeve is in a second in-use configuration.