TechKewl Cooling Neckwear maintains a comfortable 14 degrees C (58 degrees F) for heat stress relief. They are ideal for cooling the upper body while at work or play. Tie fasten, Cool Pax™ Phase Change Cooling inserts maintain a comfortable 58°F (14°C). 100% Cotton carrier, Polyurethane Insert. Includes 1 Neck Band and 1 (6661) Cool Pax™ Insert. Size: Adult.