This is the NEMO SIREN 45 (7°C / 45°F rated) sleeping bag, which is not sold in Japan. (Discontinued) It's quite lightweight, with a measured weight of 613g including the compression sack, and uses high-performance 850FP down. It's a lightweight quilt type, so it doesn't have a hood or back. The down is fluffy, and it's in beautiful condition with no stains or tears. This is a rare sleeping bag that is not sold in Japan and is no longer in production, so it's rarely seen even domestically. Recommended for those who want to lighten their gear, enthusiasts, and those who don't want to be like everyone else. 【Contents】 Main body, compression storage bag (Siren 20 substitute), and an aftermarket storage bag. 【Search terms】 ul Ultralight, Yamatomichi, Atelier Bluebottle, SOLA TITANIUM GEAR, sixmoon designs, RIDGE MOUNTAIN GEAR, Jindaiji mountain works, ARC’TERYX, montbell, patagonia, The north face, hyperlite mountain gear, OMM, Zpacks, and wander, houdini, STATIC, moonlight gear GOSSAMER GEAR ENLIGHTENED EQUIPMENT HIGH TAIL DESIGNS Mountain laurel designs, HMG teton bros Locus gear