Lining is polyester. Only the earband is Merino Wool.

Reviewed by Davey Crockett from Tennessee on Monday, June 8, 2015
The lining is NOT merino wool. Rather, 100% polyester. Only the approx. 2" earband is merino wool.

Even though this is a bit of a misrepresentation with regard to the materials, the hat (1) is good fit for my 7-3/8 noggin, (2) very warm with the polyester lining, (3) has fair merino wool ear coverage.

Knocking off two stars for Sierra's typical description error.
Previous Review “It the primaloft, not the merino”