You can also find this at Lakeland in City Centre, 1st floor near Home Centre.  A little bit expensive for the large, jumbo size pack at QR145 but extreemly useful.  I bought two packs which was sufficient for 4 duvets, 4 sets of sheets, duvet covers, 6 six feather pillows and 3 sets of towels.  Saved a lot of space.