A tubular sleeve having a proximal end opposite a distal end, a cutout formed through the tubular sleeve proximate the distal end, a first panel having at least a trailing edge and spanning a first portion of the cutout, a second panel having at least a leading edge and a trailing edge and spanning a second portion of the cutout, and a third panel having at least a leading edge and spanning a third portion of the cutout. The second panel may overlap the first panel across the entire width of the cutout such that the second-panel leading edge is distal to the first-panel trailing edge. The third panel may overlap the second panel across the entire width of the cutout such that the third-panel leading edge is distal to the second-panel trailing edge. In some aspects, a mitten may be affixed to an interior surface of the tubular sleeve.