Outdoor Research Alpine AscentShell Bivy. A full-spec yet lightweight and enduringly popular OR masterpiece bivy. Purchased from an authorized US retailer. Highly recommended for those who prioritize weight but don't want to sacrifice comfort and peace of mind. From the manufacturer's website: Alpine AscentShell Bivy The new bivy, which incorporates Outdoor Research's cult-favorite AscentShell technology from the Helium AscentShell, dramatically improves breathability, reduces condensation, and provides a more comfortable outdoor sleeping experience. Compared to a clamshell open structure, the step-in open allows you to enter the bivy without removing your boots, and you won't feel any swaying. Ideal for alpine use and harsh weather conditions. Color: Nimbus Fabric: bluesign® certified AscentShell™ x Pertex® Shield Air Diamond Fuse 3L 100% nylon upper / 100% nylon 40D polyurethane laminate floor / bluesign® certified 100% polyester mesh Weight: 528g (may vary) [Repeat customers and bulk purchases will receive a discount] *Please feel free to contact us if you are interested. *Repeat customers are defined as those with 100 or more reviews. Instant purchase is welcome. Bivys and tents currently on sale are here: #bivycolor #outdoorresearch #アウトドアリサーチ #mountainlaureldesigns #マウンテンローレルデザインズ #locusgear #ローカスギア #bivy #bivysack #moonlightgear #ムーンライトギア #ハイカーズデポ #UL #ウルトラライト