ST31 3 ST31 3 Long Sleeve Cooling T Shirt Size:4X Offers indirect ventilation through plastic Best Seller Offers indirect ventilation through plastic hooded vents in the frame Soft vinyl body molds snugly to the face without pressure or irritation Fits comfortably over most prescription glasses Extended face flanges close the gaps over the nose and cheekbone areas and water resistance Foam insulation keeps hands warm Silicone Free The Arctic Radwear® ST31 3 long sleeve cooling t shirt uses Max Dri® Technology treated with RadCool™ resulting in revolutionary temperature management that uses perspiration to keep you cool & dry The t shirt moves moisture away from the skin and circulates it through the fabric keeping you cooler longer