A grid-fleece interior traps heat next to-skin without adding bulk or limiting range of motion, and a smooth exterior makes for seamless layering.
Men's Thermal Pant, Our warmest midlayer for cold days, the M's Thermal Pants feature a grid-fleece interior that traps heat next to skin, without
Simms Men's Thermal Pant
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Simms Thermal Pant - Men's