Thermarest Hyperion 20F/-6C Sleeping Bag Left ZipWeighing a mere 1 lb. 4 oz, defy the cold and rest better while moving through the mountains with the Hyperion.Built to provide a featherlight pack weight and high-performance warmth, the Hyperion 20F/-6C is among the lightest in its class without sacrificing an ounce of performance.The bag uses thermally-efficient box baffled construction in key areas to ensure warmth and comfort in an ultralight package. Designed with high-quality materials and Therm-a-Rest performance features like SynergyLink Connectors, the Hyperion keeps your pack light, giving you the freedom to move quickly in the backcountry. Storage sack and compression stuff sack included.Can expose you to toluene, which is known to the State of California to cause birth defects or other reproductive harm.Features: *Ultralight: One of the lightest pieces in its class, the Hyperion sets a new standard for high-performance outdoor equipment. *900-fill Nikwax Hydrophobic Down: Stays drier and maintains loft 60 times longer than untreated down. *Unrivaled Packability: Lightweight materials and precise design allow for a smaller packed size than ever before. *Box Baffled Construction: Uses mesh walls to maximize loft and minimize cold spots in key areas. *Comfort Fit: Ergonomic shape and longer zipper provide a more human-friendly fit than other ultralight bags. *SynergyLink Connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility. *Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most, 70% on the top and sides with 30% on the back. *Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.Specs: Small Regular LongHeight (Standard) 4.5 in 4.5 in 4.5 inFits (Standard) 66 in 72 in 78 inFits (Metric) 168 cm 183 cm 198 cmWeight (Standard) 1 lbs 3 oz 1 lbs 4 oz 1 lbs 6 ozFill material 900 Fill Goose NHD/RDSWeight (Metric) 0.54 kg 0.57 kg 0.62 kgWidth (Standard) 27.5 in 28.5 in 29 inWidth (Metric) 70 cm 72 cm 74 cmLength (Standard) 73 in 80 in 85 inLength (Metric) 185 cm 203 cm 216 cmGirth, Shoulder (Standard) 55 in 57 in 58 inGirth, Shoulder (Metric) 140 cm 145 cm 147 cmGirth, Hip (Standard) 48.5 in 49.5 in 51 inGirth, Hip (Metric) 123 cm 126 cm 130 cmGirth, Foot box (Standard) 40 in 43 in 46 inGirth, Foot box (Metric) 102 cm 109 cm 117 cmPacked dimension (Standard) 6 x 8 in 6 x 8 in 6 x 8 inPacked dimension (Metric) 15 x 20 cm 15 x 20 cm 15 x 20 cmEN Comfort (F) 32 F 32 F 32 FEN Comfort (C) 0 C 0 C 0 CEN Limit (F) 20 F 20 F 20 FEN Limit (C) 0 C 0 C 0 CEN Extreme (F) -6 F -6 F -6 FEN Extreme (C) -23 C -23 C -23 CFill weight (Standard) 11.5 oz 12.5 oz 14 ozFill weight (Metric) 0.33 kg 0.36 kg 0.40 kgShell fabric 10D Nylon RipStop w/ DWRLiner fabric 10D Nylon RipStop w/ ThermaCapture Lining Zipper side Left Left LeftTemperature rating in accordance to EN 13537 / ISO 23537COMFORT RANGE: 32º F/0º CLIMIT Transition Range: 20º F/-6º CRISK RANGE: -9º F/-23º CWARNING! In the risk range a strong sensation of cold has to be expected. There is a risk of health damage by hypothermia.