This is a pouch made from 1.0 oz DCF (Dyneema® Composite Fabric). It has a gusseted bottom, so it can be expanded as shown in the third photo, making it convenient for storing small items needed for mountain trips or travel. The gusset has also been widened by about 3cm compared to previous pouches, increasing the capacity. If you have a strap, you can attach it to the loops on both sides and use it as a sacoche. *As shown in the photos, due to the nature of DCF fabric, there may be wrinkles that occur during the manufacturing process. *Seam sealing is not applied. This item is being offered at this price as a prototype. How about using it for hiking or a quick outing? Fabric: 1.0 oz Dyneema® Composite Fabric Zipper: Water-resistant zipper YKK® Aquaguard (Black) Weight: Approximately 7g Flat dimensions: Approximately 13cm (H) x 20cm (W) The same fabric and parts as major outdoor brands are used, so I think the durability and quality are comparable, but it is a handmade item made by an amateur. I try to sew carefully, but please refrain from purchasing if you are looking for professional techniques or the quality of ready-made products.