The Columbia Zero Rules Light SS Crew is a technical short-sleeve shirt engineered for high-output activities in extreme heat. As part of Columbias performance lineup, this shirt utilizes industry-leading fabric technology to actively lower the material’s temperature, making it an essential layer for hiking, running, or long days on the water. Lightweight and highly breathable, it is designed to keep you comfortable and dry when the sun is at its peak.

Key Features:

• Omni-Freeze ZERO Technology: Features specialized blue rings that react with your sweat to lower the fabric’s temperature, providing an immediate cooling sensation.
• Omni-Wick Fabric: An advanced moisture-management system that pulls sweat away from the body for rapid evaporation.
• Omni-Shade UPF 30: Built-in sun protection guards against harmful UVA and UVB rays during extended outdoor exposure.
• Antimicrobial Treatment: Inhibits the growth of odor-causing bacteria to keep the garment fresh during intense physical exertion.
• Comfort Stretch: Incorporates a lightweight, flexible fabric blend that allows for a full range of motion without restriction.