Simms Dockwear Wool Beanie, The new Simms Dockwear Wool Beanie is a thicker beanie made of 80% lambswool/20% nylon and is sure to keep you warm during the brutal weather on the river. A leather Simms trout patch is adorned on the front of the beanie. From the NEW Simms Dockwear Range of clothing! One size fits most. Made from 80% lambs wool and 20% nylon.