The Simms Heavyweight Hoody is designed to be worn as a baselayer under a wading jacket in cold weather.

Smooth jacquard surface with grid fleece backing for stretch
and micro pockets that retain heat and transport moisture away
Tight-fitting hood with three panels that closes with an asymmetrical zipper,
that protects the nose, mouth and face from wind and weather.
elements
The sleeves are built with extra length and thumbholes to keep
the sleeves in place and gives the back of the hand extra warmth.
heat
Flatlock seams provide next-to-skin comfort