This is a collaboration product between FUKU, a camping YouTuber, and WILDTECH. By placing an inner cooler bag (18L) inside an outer cooler bag (23L) like a kangaroo, the insulation function is doubled, and the insulation is further enhanced. This cooler bag combines the "convenience" of a soft-type cooler bag's lightness with the "cooling power" comparable to a hard-type cooler. The outer cooler bag can hold six 2L PET bottles standing up, providing ample capacity. When I was looking for a high-performance cooler box, I bought various types, including soft coolers. However, a hard cooler box suited me better, so I stored this one after removing the tags without using it. ＜Outer Cooler Bag＞ Dimensions: Width 34cm x Height 36.6cm x Depth 26cm Capacity: 23L ＜Inner Cooler Bag＞ Dimensions: Width 30cm x Height 31cm x Depth 22cm Capacity: 18L Product Name: 215-AFXP171 Color: Tan (beige) Weight: Approximately 1.67kg Material: Polyester X-Inslation, developed by Explus, is used for long-lasting cooling and insulation effects.