Cool Medics M1844R-OR Reflective Neck Cooler, Orange Cools up to 6 hours at 98 degrees Light weight and won't get your clothing wet Great for cooling down firefighters coming off fire lines, construction workers, flight line personnel, where ever heat can effect how you work or play. Reusable, immerse in water (10-30 seconds) to activate the cooling process Constructed from a patented 3 layer fabric with a thermally conductive lining