【CASSIN】 A well-known manufacturer specializing in products that prioritize health and safety for mountaineering, climbing, camping, and outdoor activities. 【ActivePLAS Series】 Uses mesh material on the back and belt to allow air to circulate, considering various risks associated with sweat. 【Size】 Capacity: Approximately 15L Height: Approximately 46cm Width: Approximately 30cm Depth: Approximately 17cm〜23cm 《Please understand that there may be some errors due to amateur measurements.》 【Regarding the Item】 This item is used. Please understand that it is a used item. Thank you.