Review on LUXEAR Cooling Pillowcase Queen Size, 2 Pack Arc-Chill Cool Pillowcases with Hidden Zipper, Double-Side Design [Oeko-TEX Certified], Anti-Static, Skin-Friendly, Machine Washable Pillow Cases - Gray by Pete Martin

Ordered a white set and grey set (separately) and ended up getting another white set since my family was so happy with these - TRULY cool pillowcases, exposure to air re-cooled them in a matter of a minute or two. Very smooth material (not satin but had same effect). So I purchased a blue set believing I'd be getting same material but it was not. while all the sets received are manufactured by Arc-Chill, this blue set is notably different. Definitely NOT as cool, and not as silky to the touch. The only difference between this last set and the first ones ordered was that those were all zippered and somehow I ordered the open-top version this time around. Didn't think it would be an issue but I guess it is so there you have it For the coolest of the cool pillowcases, order the zipper ones. while they may look cheaper than the open-top ones, man oh man they are wayyyyy cooler. Won't bother returning the disappointing blue set, will just use them on the "spare" bed pillows.