M's Thermal Midlayer Bottom

Plush grid fleece midlayer is ideal for a cold weather layering system and works just fine as an after-fishing pant, with pockets and full zip fly.

Simms M's Thermal Midlayer Bottom – Blackfoot River Outfitters

Women's Classic Thermal Merino Base Layer Bottom col. Black

CHALLENGER MID LAYER PANTS

Duck Camp M's Giddy Up Jogger

Men's Fishing Pants & Shorts - Wading Bottoms

Men's Fishing Pants & Shorts - Wading Bottoms

Stone Glacier - Helio Zip-Off Bottom - Hunting Mid-Layer

ECWCS Gen III Mid-Weight Thermal Grid Fleece Underwear Top (Level II), Warm Base Layer

Winter Layering for the Plus-Size Hiker

Shop Cold Weather Fishing Base Layers

Men's Merino Baselayers - Northland - Mountain Boutique Shop

Women's ULTRA LITE™ Base Layer Bottoms

Hooded Thermal Midlayer, Black — District Vision