Specialized Backpack Base Miles Featherweight This is a cycling backpack from Specialized, an American sports bicycle manufacturer. It has a capacity of 15L, which is just right, and I used it on trails. Although it has been cleaned, there is dirt from the trail on the bottom of the bag (photo 4) and on the shoulder straps (photo 5). This item originally retails for 15,200 yen, but I'm offering it for 3,000 yen (including shipping). Thank you. Below is information from the manufacturer's website: Specialized, which has produced many famous bikes from its own wind tunnel facility "Win-Tunnel," has released the "Base Miles" backpack, which pursues aerodynamics in the same experimental facility. The Featherweight, with a capacity of approximately 15 liters, is a model that pursues lightness, achieving a weight of 450g. It adopts a structure with a front pocket and a main compartment, allowing you to store items that are frequently taken out separately, similar to the Stormproof. It also has side mesh pockets perfect for bottles and folding umbrellas. The main compartment is divided into a space for large luggage such as changes of clothes, a two-part mesh pocket perfect for notebooks and writing instruments, a pocket for slightly larger items, and a sleeve for a laptop. You should be able to carry the minimum necessary changes of clothes for commuting to school or work. Of course, it is also ideal for cycling where you need to carry luggage, such as for touring with your bike. The longer the distance, the more you will benefit from the excellent aerodynamics.