I picked up the Blue Bison Tree Bark Skull Cap for cold morning walks and it does the job well. The acrylic knit feels soft against the skin and the jacquard design gives it a nice textured look that stands out from a plain beanie. One size fits most worked fine on my average head, though it sits a bit snug at first before loosening up. It is not the thickest cap for deep winter, but for everyday wear it keeps my ears warm. Happy with the purchase overall.