※After purchase, please inform us of your desired color (Black/Gray) via the transaction message. [Product Description] This is a roll-top pack liner that maximizes the waterproof properties of DCF (Dyneema). It ensures waterproofness, allowing you to pack items you absolutely don't want to get wet, such as sleeping bags and changes of clothes, with peace of mind. Only the roll-top opening is sewn with a sewing machine; the body is finished solely with bonding and adhesion. We believe this results in higher waterproofness than seam sealing with a sewing machine. *DCF's weakness is that the needle holes from sewing machines can expand under pressure. Therefore, Under Dog Gear minimizes the use of sewing machines in production. Other features below↓ - Made with thick 1.43oz DCF (Dyneema) for durability. - Appropriate size for 25-30L packs. (Example 1: For summer, a down sleeping bag up to ~500g, a change of clothes, etc.) (Example 2: For winter, a down sleeping bag up to ~1000g) - The bottom is shaped into a rectangle to fit the pack's shape, ensuring a comfortable fit when wearing the pack. [Specifications] Material: DCF (Dyneema Composite Fabric) 1.43oz Colors: Black, Gray Size: Height 49 x Width 33 x Bottom (22 x 11) cm Capacity: Approx. 12L Recommended pack size: 25-30L Weight: 34g *There may be slight changes in parts such as threads compared to the photos. *Due to the nature of the fabric, some wrinkles may occur during the manufacturing process. We appreciate your understanding. Other products↓ #Under_Dog Material...UL/Ultralight, Dyneema, DCF Size...11-25 L