This is a Hyperlite Mountain Gear (HMG) Windrider 40L Black, size S, the flagship backpack. I purchased it with the intention of using it for tent camping (retail price 64,900 yen), but I've been staying in mountain huts more often, and I don't think I'll be using a 40L pack in the future, so I'm putting it up for sale. I opened it to try packing it after purchase, but it has never been used outdoors. It has been stored indoors in a Yamato Michi pack liner, so it's in new condition without any dust. I will ship it as is, so please feel free to use the pack liner (image 10). Here's the product description: One of HMG's three multi-purpose backpacking models, this flagship product is designed for on-trail, off-trail, and all-season environments, with mesh external pockets for increased visibility of contents, breathability, and quick drying of wet gear, designed for almost any activity. Despite being a lightweight backpack, the two frames on the back allow for good weight distribution between the hips and shoulders. Unlike typical UL backpacks, where the shoulder load ratio increases depending on the packing situation, the framed Windrider distributes weight well, making it suitable for long-distance hikes and tent camping. The frames are removable. The inside is seam-sealed, providing excellent waterproofness. ・External mesh pocket for increased visibility (approx. 10L) ・Two compression straps above the pocket to secure your gear ・D-shaped flat bottom keeps the pack upright when loading and unloading gear. ・Roll-top closure with internal mesh sleeve and hydro port ・White pack is 50-denier DCH fabric, black pack is 150-denier ・Back length Small: 38.10～43.18cm Windrider40 Capacity: 40L External Volume: 9.8L Load Capacity: Up to 40 lbs DCH150 (body/bottom) 32.4 oz | 919g Back Width: 10.5 inches | 26.7 cm Height - Fully Expanded: 30.0 inches | 76.2 cm Top Circumference: 37.5 inches | 95.3 cm Bottom Circumference: 33.5 inches | 85.1 cm Made in Mexico #HyperliteMountainGear #YamatoMichi #Backpack #MoonlightGear #Mountaineering #Hiking #UL #Zack