The Arc'teryx PRO Cold WX Bottom SV Men's is a heavyweight cold-weather base layer designed to deliver reliable warmth and moisture control in harsh environments. From our perspective, it is a proven option for professionals who need next-to-skin insulation that performs consistently during both static exposure and high-output movement. Built with a focus on thermal efficiency and comfort, it integrates seamlessly into a full cold-weather layering system. It is especially well suited for users operating in extreme cold where dependable base layer performance is critical.

Features

• Polartec Power Stretch Fabric: Provides a balance of thermal retention, stretch mobility, and moisture-wicking performance.

• Heavyweight Fleece Construction: Designed to deliver consistent warmth in cold and extreme cold conditions.

• Moisture Management: Wicks sweat away from the skin to help maintain dryness and comfort during movement.

• Flatlock Seam Construction: Reduces chafing and improves next-to-skin comfort during extended wear.

• Gusseted Crotch: Enhances mobility and durability while allowing a full range of unrestricted motion.

• Next-to-Skin Fit: Designed to sit close to the body for improved layering efficiency and thermal performance.

• Stretch Mobility: Fabric and patterning support dynamic movement without restriction.

Best For

• Military personnel operating in sustained cold-weather field environments

• Law enforcement and tactical teams working in winter patrol or extended outdoor conditions

• Winter range training and high-output cold-weather activity

• Outdoor professionals requiring dependable thermal base layers in harsh climates

• Layering systems for extreme cold where moisture management and insulation are critical

Specifications

• Material: Polartec Power Stretch Knit (6.8 oz)

• Fabric Type: Heavyweight stretch fleece

• Weight: 295 g / 10.4 oz

• Fit: Next-to-skin, layering-compatible

• Construction: Flatlock seams

• Mobility Design: Gusseted crotch

• Primary Performance: Thermal efficiency and moisture management