This bag, which was released in the 1970s, has been improved for ease of use while retaining its original form, and it's no exaggeration to say it's a history of daypacks. The most distinctive feature is its appearance. Its retro look is due to its triangular shape, commonly known as the teardrop shape. The upper gusset is thin, and the bottom gusset is thick, so it looks triangular from the side, further emphasizing its shape. Thanks to this, even when packed full, the beautiful form doesn't feel bulky, which is popular. The nylon fabric is excellent in tear strength and abrasion resistance, and it's characterized by a softer feel compared to polyester. In addition to the water repellency of the nylon itself, it has a polyurethane coating on the back, which prevents water from entering, although not completely. The fabric attached above the zipper, often said to be "difficult to open," is a rain flap to prevent rain from entering through the gaps in the zipper. The zippers are custom-made YKK zippers, which are highly regarded worldwide, and they open and close very smoothly. The shoulder harness has 10mm of EVA. EVA is a material called ethylene-vinyl acetate copolymer resin, which is excellent in impact resistance, elasticity, flexibility, and durability, significantly reducing the burden on the shoulders. Another feature is the small number of decorative elements. On the surface, there's only the familiar "pig nose" (ice axe holder) and the KLETY logo mark, a simple design that appeals to people of all ages and genders. There are two main storage compartments. The main compartment has an organizer. Because there is a large storage space, it can be a problem to store small items, but by using this organizer, you can organize and greatly improve usability. It can hold A4 size items, as well as B4 size items. The sub-compartment with a gusset is large for a sub-compartment, and you can store various items. I think it was about 13,000 yen at the time of purchase. There is a feeling of use, so I will sell it at a low price, so please purchase only if you understand.