Warmer than cotton, more natural than synthetics, wool is the future just like it was the past. Here are four of our favorite wool shirts from Smartwool, LL Bean, Pendleton, and Woolrich.

Smartwool
Anchor Line Shirt Jacket, $180 (Men's)

With 80 percent merino wool, the Anchor Line is softer against the skin than these other products, with a feel that is closer to fleece, but no less warm. Buy one here.

LL Bean
Signature Shirt Jacket, $159 (Men's)

Closer to a jacket than the others, this classic LL Bean number has an 85 percent wool blend with a fleece lining, and is warm enough for most Maine days. Find it here.

Pendleton
Quilted Shirt Jacket, $199 (Men's)

This shirt/jacket hybrid--100 percent wool with a nylon body lining and polyester sleeve lining--is meant to be an outer layer for cool days. Find one here.

Woolrich
Bering Wool Plaid shirt, $109 (Women's)

A tailored, slim-fitting shirt that has been in style for some 50 years, the Woolrich Bering is 100 percent wool and a perfect winter long-sleeve layer. Buy one here.