An adjustable article has an area of overlapping fabric with facing surfaces and a zipper on one of the surfaces. A zipper slider with fastener moves along two rows of teeth of the zipper to cause them to be separated in one direction and interdigitate in an opposite direction. A connector at the other surface and at one end of a distance of a dimension to be adjusted is engaged to the fastener so that a degree of overlap of the overlapping fabric surfaces changes as the slider moves along the rows of teeth to change the dimension.