intermediate stage of adjustment is reached as shown in fig7 at this stage the zipper pull 64 has been moved to a position such that the first and second angled edges 66 70 have been completely joined to each other and the upper and lower edges 46 50 are partially adjacent to each other continuing to move the zipper pull 64 in the first direction joins additional zipper teeth of the upper and lower rows 58 62 thereby drawing the upper edge 46 toward the lower edge 50 as the zipper pull 64 is moved around the sleeve 18 the fabric portion 54 is gathered together and becomes hidden by the upper sleeve portion 22 and the lower sleeve portion 26 see fig8 when the zipper pull 64 abuts a second zipper stop 90 the adjustment to the retracted position is complete in this configuration the upper and lower rows of zipper teeth 58 62 are completely joined and the upper and lower edges 46 50 are adjacent to each other about the entire circumference of the sleeve 18 adjusting the sleeve 18 back to the extended position comprises moving the zipper pull 64 in a second direction opposite the first direction from the second zipper stop 90 circumferentially around the sleeve 18 and back to the first zipper stop 88 thereby separating the upper and lower rows of zipper teeth 58 62 and allowing the upper and lower edges 46 50 to be once again spaced from each other.