The Simms Men’s Strata 160 Base Layer Bottom provides anglers with a foundational thermal layer designed to maintain core warmth without adding bulk inside waders. This lightweight bottom excels at regulating body temperature during active fishing days, efficiently pulling moisture away from the skin to prevent the chill that occurs when perspiration cools down.

Best For

This base layer is specifically engineered for active wading and hiking in cool to cold conditions, such as spring runoff or crisp autumn mornings. It serves as an ideal next-to-skin layer under breathable waders or insulated bibs, performing best for anglers who cover significant ground and require a garment that prevents overheating while moving but retains heat when standing stationary in cold water.

Key Features

• Moisture Wicking Capabilities The fabric actively transports sweat from the skin to the exterior of the material for rapid evaporation, ensuring you stay dry and warm throughout high-output activities.
• Flatlock Seam Construction Seams are stitched flat to eliminate abrasion and chafing points, providing superior comfort even when compressed under heavy neoprene waders or tight layering systems.
• Anti-Odor Technology An antimicrobial treatment prevents the growth of odor-causing bacteria, making these bottoms a practical choice for multi-day trips where washing gear is not an option.

Why We Like It

The Strata 160 stands out because of its versatility across a wide range of temperatures; it hits the sweet spot between a lightweight liner and a heavy thermal. Unlike thicker fleece options that can restrict mobility or cause overheating during the hike to the river, this layer offers a precise anatomical fit that moves with the angler. The secure elastic waistband ensures the bottoms stay in place without bunching or rolling, addressing a common annoyance when layering under waders.

Fabric / Material Composition

These bottoms are crafted from a 160gsm fleece fabric consisting of a 94% polyester and 6% spandex blend. This composition offers two-way stretch for unrestricted movement and features a brushed interior that traps body heat while maintaining a smooth exterior for easy layering.