This is a hammock sleeping bag cover designed to reduce the effects of wind when hammock camping, such as during UL hiking in the mountains with many trees. After several custom orders and refining the design, user reviews have been positive and new inquiries have increased, so we've made it a standard product. The production process is very complicated, so it will take some time to restock once it sells out. The price is set at the bare minimum including shipping, so no discounts are available. Materials: Tyvek Silver Weight: 337g (body 328g, bag 9g) Body Size: Length 280cm, Width 95-35cm Storage Size: φ10cm, Length 25cm Rope openings: Drawstrings at both ends Hanging loops: 4 places Installed on the left and right, can be used depending on the situation Zipper: 140cm, YKK Double-sided slider for easy opening and closing from the inside Ventilation window: φ18cm, height approx. 15cm, with drawstring #Tyvek #Silver #SleepingBagCover #Mountaineering #MountaineeringGear #Camping #SleepingBag #UL #Ultralight #Fastpacking #Handmade #Windproof #Insulation #HeatRetention #MoisturePermeability #WaterRepellent