A window shade comprising: a head rail, a plurality of collapsible rows (714, 715) suspended from the head rail, a plurality of securement members (722, 724), and a plurality of opening members (726, 728); each of the plurality of rows (714, 715) extending in a transverse direction and having an upper region (716, 717) and a lower region (720, 721); characterised in that: the plurality of securement members (722, 724) being restrainedly positioned with each of the plurality of rows (714, 715) at the upper region (716, 717) of each row (714, 715); each of the plurality of rows (714, 715) comprising a major edge portion (730, 740) and a minor edge portion (734, 742), wherein when each of the rows (714, 715) is in a closed position, the row tapers from the major edge portion (730, 740) to the minor edge portion (734, 742) thereof, adjacent ones among the plurality of rows (714, 715) tapering in alternate directions, the rows tapering in a same first direction forming a first set of rows, and the rows tapering in a same second direction forming a second set of rows; the plurality of rows (714, 715) further being respectively restrainedly positioned with the plurality of opening members (726, 728), the plurality of opening members (726, 728) including a first opening member respectively secured to the lower regions of the first set of rows near the major edge portions thereof, and a second opening member respectively secured to the lower regions of the second set of rows near the major edge portions thereof; and a first vertical adjustment mechanism and a second vertical adjustment mechanism operatively connected to the first and second opening members (726, 728) respectively, the first vertical adjustment mechanism and the second adjustment mechanism enabling the first and second opening members (726, 728) to open or close the first and second sets of rows (714, 715) restrainedly positioned therewith. the plurality of securement members (722, 724) being restrainedly positioned with each of the plurality of rows (714, 715) at the upper region (716, 717) of each row (714, 715); each of the plurality of rows (714, 715) comprising a major edge portion (730, 740) and a minor edge portion (734, 742), wherein when each of the rows (714, 715) is in a closed position, the row tapers from the major edge portion (730, 740) to the minor edge portion (734, 742) thereof, adjacent ones among the plurality of rows (714, 715) tapering in alternate directions, the rows tapering in a same first direction forming a first set of rows, and the rows tapering in a same second direction forming a second set of rows; the plurality of rows (714, 715) further being respectively restrainedly positioned with the plurality of opening members (726, 728), the plurality of opening members (726, 728) including a first opening member respectively secured to the lower regions of the first set of rows near the major edge portions thereof, and a second opening member respectively secured to the lower regions of the second set of rows near the major edge portions thereof; and a first vertical adjustment mechanism and a second vertical adjustment mechanism operatively connected to the first and second opening members (726, 728) respectively, the first vertical adjustment mechanism and the second adjustment mechanism enabling the first and second opening members (726, 728) to open or close the first and second sets of rows (714, 715) restrainedly positioned therewith.