M's Heavyweight Baselayer Bottom

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

Burton M Heavyweight X Base Layer Quarter-Zip

Women's Merino Wool Base Layer Bottoms Heavyweight

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Polarmax Men's Micro Fleece Zip-T Soft Warm Thermal Heavyweight

Arc'teryx Rho Heavyweight Bottom - Synthetic base layer Men's

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Simms Fishing Products Men's Heavyweight Baselayer Hoody - Black

M's Fjord Pants Simms Fishing Products

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M's Lightweight Baselayer Top – Headwaters Outfitters Outdoor Adventures