Padacheek - microfleece or cotton flannel?

[genieangel]

I'm buying a padacheek cover for my straps. They have two kinds, microfleece, and if you scroll down there is cotton flannel.

Any recommendations on which one to buy? I get severe strap lines that last all day. Is microfleece hotter than the cotton flannel ones? Does the cotton flannel thick enough to work?

[chill]

I only have the micro fleece ones. I sleep hot (my wife refers to me at The Furnace) and they don't bother me as being too hot or sweat producing. They certainly due alleviate the mask lines.