At just one ounce this pillowcase is light enough to carry on any backcountry sojourn. On the trail it packs down to a miniscule size. At camp add a down jacket or spare clothing to create a comfortable pillow with a plush surface.
You can stuff a nylon stuffsack with clothing and get a half decent pillow - but by using this be-spoke version you can rest you head on a soft warm polyester pillow like at home (almost). Also pretty useful if you are touring the world staying in dodgy accommodation - you can stuff that lemon stained excuse for a pillow that they give you into your nice clean Thermarest pillowcase.
A lot smaller than a full-sized version but size isn`t everything.