This listing is for the backpack only. For those who want it, a separately sold pump can be included (see the latter part of the description). -------✧Product Description✧------- This is the popular AIRBACK backpack, which ended with a 2588% achievement rate on the crowdfunding platform Makuake. Retail price: ¥59,800 Used 5 times (domestic and international) I purchased it because of its compression storage, expansion function, and other functionalities, but it was too big for me as I am small, so I am selling it to buy a smaller size. There are minor scratches from use, so please refer to the photos. Please refrain from purchasing if you are concerned about the condition, as this is a used item. Please refer to the manufacturer's description images in the latter half of the photos for the specifications. This is the travel type with a weight scale on the handle. (1.9kg) ・Size Height 49cm Width 32cm Depth 15-20cm (changes before and after zipper expansion) -------✧ Separately Sold Pump Description ✧------- This is the pump I actually used for compressing this bag. The button is missing. I was using it by pressing it with the tip of the included nozzle. If you wish to purchase it, I will include it for an additional ¥3000, so please let me know in the comments. FLEXTAIL Air Pump Zero Pump Retail price: ¥8900 【Product Features】 ・No box or instruction manual ・The button is missing, but it can be used by pressing it with the tip of the included nozzle. ・The lightest model in the series, weighing only 33g. ・Powerful airflow of 180L/min. ・Dedicated rechargeable battery (direct charging via type-C USB cord). ・Comes with 6 types of nozzles. ・Can be used for a long time. 【Product Description】 With a weight of only 33g, it has a power of 180L/min and a battery performance that allows for 25 minutes of use. It can be carried without hesitation even in places where luggage is limited, such as mountain climbing. There are 6 types of included nozzles, and it supports various brands of air mattresses. Made of aluminum material, it has a luxurious matte texture and finish. 【Target Brands】 THERM-A-REST/KLYMIT/NEMO/SEATOSUMMIT/BIG AGNES/EXPED/FLEXTAIL Accessories: None Stains/tears: Yes