Why This Barrier Base Layer

The Filson Barrier Long Sleeve T-Shirt is the ultimate technical foundation for waterfowl hunters. Engineered to keep you dry during high-exertion treks to the blind, it is crafted from a **double-knit polyester** that rapidly wicks moisture away from the skin. Unlike cotton, which creates a "cold sweat," this fabric dries instantly to maintain your core temperature.

This specific shirt features the **Mossy Oak Shadow Grass®** pattern, optimized for concealment in marshes, reeds, and tall grass. It is finished with an **antimicrobial treatment** that prevents odors from forming—a critical feature for multi-day trips where washing gear isn't an option.

Key Features

• Shadow Grass Camo: Specialized pattern breaks up your outline effectively in wetland environments.
• Moisture Wicking: Double-knit fabric pulls sweat to the surface for immediate evaporation.
• Odor Control: Antimicrobial finish keeps the shirt fresh even after long days in the field.
• Comfort Fit: Flatlock seams prevent chafing under waders or backpack straps.
• Breathable: Allows excess heat to escape, preventing overheating during activity.

Sizing & Measurements

Filson technical base layers feature an athletic fit that sits closer to the body to maximize wicking. Size Small is ideal for trim builds.

Materials & Care

• Material: 100% Polyester Double-Knit (4-oz).
• Care: Machine wash cold, tumble dry low. Do not use fabric softeners (they clog the wicking pores).

Overview

The Filson Barrier Long Sleeve T-Shirt in Shadow Grass Camo is essential gear for the serious waterfowler. Combining advanced moisture management with superior concealment, this **Size Small** shirt is the perfect start to your cold-weather layering system.