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Simms warmest midlayer for cold days, the M's Thermal Pants feature a grid-fleece interior that traps heat next to skin, without adding bulk or lim...

Our warmest midlayer for cold days, the M's Thermal 1/4 Zip Top adds warmth on its own, or layer it under your favorite jacket to dial in reliable ...

Simms' Lightweight Baselayer Top is the essential next-to-skin layer for building a rock-solid foundation that prioritizes all-day mobility, warmth...

Our warmest layer for cold days, the M’s Thermal 1/4 Zip Top adds warmth on its own, or layer it under your favorite jacket to dial in reliable com...

Simms' Lightweight Baselayer Bottom is the essential next-to-skin layer for building a rock-solid foundation that prioritizes all-day mobility, war...