◆【Large Capacity 6.1L Cooler Box Included】 This soft cooler box boasts high cooling and insulation thanks to its 4-layer construction. The exterior is made of ultra-thick 900D Oxford fabric, providing excellent waterproof performance and resistance to wear, tearing, and abrasion. The interior uses thick, antibacterial PEVA material with cooling and insulation functions. With a total of 4 layers and a combination of multiple materials, it exhibits high cooling power. Furthermore, the cooling power is enhanced by adding ice packs inside! This is the type that can be attached to a chair, but I'm selling this because I'm only using the chair itself.