Get refreshed with cooling packs and quick-drying material! Beige ● Cool your back, a key area for preventing heatstroke! ● The fabric uses quick-drying double russell. It's also cushioned for a comfortable fit. The front side is a breathable fabric with a honeycomb structure. Even without a cooling pack, you can get a cool feeling by soaking it in cold water and lightly wringing it out due to evaporative cooling. ● There's a cooling pack pocket on the back, where you can insert an aluminum cooling pack. Efficiently cool your body with the cooling pack. ● Free size, adjustable. Use the cooling packs in the dedicated aluminum pouches. "Quick-drying material Coolmax(R)" Quickly evaporates sweat, providing a cool feeling through evaporative cooling. Creates a dry and comfortable feel. "Double Russell" A breathable material with a honeycomb structure woven in a special way. It's also quick-drying, providing a dry and comfortable feel.