This is an Aer FIT PACK 3 backpack. I used it for six months, alternating with another backpack. It has a design that can be used in a wide range of situations, from business to casual. Although there is some wear and tear, there are no noticeable stains, and I think it can still be used in good condition ◎ [Brand] Aer [Capacity] 18.7L [Color] Black系 (Black-based) [Condition] No noticeable scratches or stains Please understand that this is a used item and has been stored at home. Thank you. *It may be removed suddenly as it is also listed on other sites. Color: Black系 (Black-based)