This is a Phase Change Cooling Product (PCCP). Submerge inserts in ice water or put in freezer until solidified, place into carrier and wear! Inserts may be reactivated as needed.

100% cotton V-neck with zipper closure, hook & loop girth adjustments, and built-in pocket for hydration bladder and drinking hose with valve (included). Includes one (1) set of Phase Change Cooling Inserts HS3026 & Hydration System HS3029. Phase Change Cooling Inserts maintain a comfortable 58°F (15°C) for up to 3 hours. Can be ordered in NOMEX and INDURA fire resistant fabrics. Sizing: M/L (100-175 lbs.), L/XL (175-250 lbs.), 2XL (250-300 lbs.)