IMMEDIATE & LONG-LASTING COOLING RELIEF – Packs maintain constant 64°F (18°C) for up to 4 hours | QUICK RECHARGE – Packs recharge in a little as 10 minutes | HONEYCOMB DESIGN – Patented honeycomb ice pack design eliminates stiffness | FLEXIBLE FIT – Adjustable hook and loop closures on both shoulders and waist | COMFORTABLE – Made out of cotton | MORE COOLING POWER – Extended vest surface area enhances cooling power | AVAILABLE IN 2 SIZES: S/M and L/XL