Get refreshed with cooling packs and quick-drying material! Beige ● Cool your back, a key area for heatstroke prevention! ● 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, and you can use it with an aluminum cooling pack. Efficiently cool your body with the cooling pack. ● Free size, adjustable. Use the cooling packs in the dedicated aluminum bags. "Quick-drying material Coolmax(R)" Quickly evaporates sweat and provides a cool feeling through evaporative cooling. Creates a smooth, dry feel. "Double Russell" A breathable material with a honeycomb structure woven in a special way. It's quick-drying and provides a comfortable, dry feel.