※ This is the price for the item listed in the title only. 【Background】 Aiming for "Thump, thump, thump. Okay, packing complete!!" This is a half-size box that fits perfectly on top of two "Mountain Stacking Boxes" (sold separately). It's useful for packing small items and food at the end of your backpack. 【Features】 ● The height and depth are the same as the "Mountain Stacking Box S size" (sold separately), but the width is halved. Two of these can fit perfectly on top of the Mountain Stacking Box. ● High strength due to sewing + seam tape processing There are two methods for sealing seams: bonding the fabric seams and sewing + seam tape processing. This product uses sewing + seam tape processing to increase strength. As a characteristic of DCF fabric, there is a decrease in strength due to the needle holes. Sealing tape compensates for this, significantly increasing durability. Dyneema tape is very expensive and requires a lot of effort, but we believe it is an essential specification for items that are compressed and have force applied to the seams. 【STACK40 Series】 Pursuing stackability for 40L backpacks. The bottoms are uniform, allowing S/M/L sizes to fit neatly, and combinations with half sizes and collapsible stuff sacks are also possible. This is a series for UL-oriented hikers. 【Specs】 Size: Approximately 158 mm wide x 220 mm long x 115 mm high (excluding the knob) Material: DCF 1.43oz, YKK AquaGuard Weight: Approximately 29g 【Notes】 ・ Although seam-sealed, waterproofness is not guaranteed. YKK AquaGuard is not completely waterproof. ・ Decorations other than the item in the title are not included. ・ Price negotiations are not possible, including for set sales. ・ Simple packaging and shipping will be used.