I made a sleeping bag cover using DuPont Tyvek. * This one has a double zipper on the side, allowing it to be fully opened from the top or slightly opened at the foot. ◑ This "Nebukuro Mamorukun" (Sleeping Bag Protector) is a sleeping bag cover designed for 3-season tent camping. For summer tent camping, I bring my NANGA Aurora 280DX. I want to keep my gear as light as possible, but it can get unexpectedly cold in the mountains even in summer, and I often wake up in the middle of the night. So, I bring "Nebukuro Mamorukun" with me as a protective charm. By covering your sleeping bag with it, you can not only protect it from condensation that fills the tent but also improve its warmth retention. ◑ The size is approximately 225 cm long, 90 cm wide at the opening, 65 cm wide at the hem, and 26 cm gusset when laid flat. The weight is approximately 260g including the bag (slight individual differences may occur). ◑ My focus was on making the opening wider to reduce stress when getting in and out, and narrowing the width towards the foot to reduce wasted space and fabric, thereby reducing weight. Also, I added a smartphone pocket inside because I wanted one (this is important). * Wrinkles will appear due to the nature of the material. * The material is waterproof, but please note that the product is sewn and therefore not completely waterproof. * The Tyvek logo will be printed on the inside. * Please understand that it will be shipped folded small. * Each item is made with care, but there may be slight individual differences. Those seeking perfection like mass-produced items should refrain from purchasing. * Only the sleeping bag cover is included. * It is also possible to attach the zipper to the left side. If you wish, please consult us in the comments. * This is strictly a sleeping bag cover. When using, please be sure to use it with a sleeping bag and sleeping system that are fully suitable for the environment. Ultralight Yamato Michi Tyvek Ridge Mountain Gear Locus Gear Hyperlite Mountain Gear Sleeping Bag Sleeping Bag Cover nemo Therm-a-Rest Big Sky Big Agnes Sea to Summit Patagonia Montbell NANGA sol bivy omm The North Face Teton Bros msr Columbia