Womens V-Neck Instant Cooling Shirt S - Polar Blue. Arctic Coolâs revolutionary Instant Cooling V-Neck Shirt is ideal for anyone who wants to keep cool and comfortable. It boasts state-of-the-art HydroFreeze X Technology, a moisture-management system that provides just the right amount of cool to keep you comfortableâ¦not chilled. Itâs made with fabric that is fast-drying, cool and soft to the touch. Designed to provide a full range of motion with 4-way stretch. Its ultra-lightweight construction is anti-microbial and easy to clean. Arctic Cool makes it easy to stay cool and comfortable while you stay active.