Under Armour UA Base 4.0 Crew

Overview

The UA Base 4.0 Crew is a high-performance base layer engineered for extreme cold in low-activity scenarios. Its specialized pattern retains heat without bulk and delivers comfort when worn as a base under layers.

Features

• Maximum warmth: built for harsh cold conditions.
• Scent control: integrated technology reduces odor buildup.
• Soft, brushed grid interior: traps air and regulates microclimate at the skin.
• 4-Way Stretch: moves freely in all directions.
• Fast-drying & moisture wicking: keeps you dry and functional.

Material & Fit

• Material: 78 % polyester / 22 % Elasterell
• Fit: Streamlined Fit