Simms - Thermal Midlayer Bottom - Black - Drift Outfitters & Fly

Technical Underwear

The Simms Thermal Midlayer Quarter-Zip Pullover for Men delivers exceptional warmth that layers easily for those cold days on the water. The grid-fleece interior traps warm air against your skin so you get ample warmth without mobility-restricting bulk. A smooth exterior makes it easy to layer a rain jacket over the top when the weather adds precipitation to the mix. This fleece pullover boasts a quarter-zip placket for ventilation as well as easy on and off.

Simms Men's Thermal 1/4 Zip Top - XL - Dark Stone

Thermal Wear - Frontier Fly Fishing

Our 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 limiting

Simms - Thermal Midlayer Bottom (Pant) - Black

The Simms Thermal Midlayer Quarter-Zip Pullover for Men delivers exceptional warmth that layers easily for those cold days on the water. The grid-fleece interior traps warm air against your skin so you get ample warmth without mobility-restricting bulk. A smooth exterior makes it easy to layer a rain jacket over the top when the weather adds precipitation to the mix. This fleece pullover boasts a quarter-zip placket for ventilation as well as easy on and off.

Simms Men's Thermal 1/4 Zip Top - XL - Black

Our 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 limiting

Simms - Thermal Midlayer Bottom

Simms - Drift Outfitters & Fly Shop Online Store

Simms Lightweight Baselayer Bottoms are the essential next-to-skin layer for building a rock-solid foundation that prioritizes all-day mobility, warmth, and wicking. The quick-dry, jersey knit material combines with the sustainable odor control for maximum next-to-skin comfort. A flat elastic waistband and fly pouch, designed with minimal seams, offers chafe-free, next to skin comfort. The Simms Lightweight base layer men's bottoms also boast flatlock seam construction for next to skin comfort.

Simms Men's Lightweight Baselayer Bottom - Carbon

Thermal Wear - Frontier Fly Fishing