※ This listing is for one item as indicated in the title. 【Background】 "The Main Backpack for Tent Camping Shifts from 40L to 35L" In recent years, the trend of lighter and more compact mountaineering gear has led to 35-38L backpacks becoming the mainstream choice for tent camping, replacing the 40L class. However, storage sacks designed for 40L, like the Hyperlite Mountain Gear PODS, are often too large and inconvenient to use inside a 35L backpack. Therefore, we developed storage sacks optimized for the inside of 35-38L backpacks. We've created a series of sizes and types to enable efficient packing. 【Features】 ● Half the size of Unit Box 35 This is half the base size of the separately sold "Unit Box 35." Two half-size units can be perfectly stacked within the Unit Box 35 series. ● Rounded corners and sewing + seam tape Rounded corners distribute pressure. Sewing + seam tape reinforces the strength reduction caused by needle holes in the DCF fabric, enhancing durability. The nature of DCF fabric is that it can experience a decrease in strength from needle holes. Seam tape compensates for this, significantly increasing durability. Dyneema tape is very expensive and requires considerable effort, but we consider it an essential specification for items that are compressed and have force applied to the seams. 【STACK35 Series】 Designed for stackability in 35-38L backpacks. The unified base allows S/M/L/XL sizes to fit neatly, and combinations with half-sizes and drawstring stuff sacks are also possible. This series is aimed at UL-oriented hikers. 【Specifications】 Size: Approximately 15 x 13 x 12 cm Weight: Approximately 24g Material: DCF 1.43oz 【Notes】 ・Decorative items other than the product title are not included. ・Price negotiations are not possible. ・Shipped with simple and compact packaging.