The best baselayer under breathable waders or rain suit when your activity level is low. Heat-trapping grid fleece is ideal for a cold weather
Men's Force Heavyweight Synthetic Wool-Blend Fleece Base Layer
M's Heavyweight Baselayer Hoody
Arc'Teryx Rho Heavyweight Zip Neck M Forage Base layer/thermal
SIMMS W's Heavyweight Baselayer Hoody - Atlantic Rivers Outfitting
M's Thermal Qtr Midlayer Zip Top
M's Simms Boxer Simms Fishing Products
Men's Dark Gray Heavyweight Hunting Base Layer Shirt – Huntworth Gear
M's Lightweight Baselayer Top
Cold Weather Fishing Gear Designed for Extreme Warmth