This invention is directed to a window shade assembly including a telescoping roller and a shade mounted on the roller which may be quickly and easily adjusted to conform to the size of the window opening into which the assembly is to be mounted. The shade at one end includes a first portion secured to the larger roller section and a second portion wrapped around the projecting end of the smaller roller section a number of times sufficient to form a tube having an outside diameter approximately equal to the outside diameter of the first roller section. The projecting smaller roller section is freely axially slidable within the tube. In accordance with a preferred form of the invention disclosed, the shade includes at the side adjacent the smaller roller section a plurality of spaced hand-strip lines, preferably invisible, extending from end-to-end parallel to the shade edge which permit hand-stripping of discrete widths of the shade while the shade is rolled on the roller. In accordance with the invention disclosed, the window shade assembly is conveniently sized merely by severing the shade material at a desired shade width and adjusting the telescoping roller to conform to the desired width.