Ultralight features. Ultralight price tag. Whether you're road tripping or backpacking, there's never a reason to sacrifice quality sleep over dependable camping gear. Transform your setup with the Women's Synthesis 20, our do-it-all sleeping bag that combines our SierraLoft (TM) synthetic insulation with lightweight, durable materials that are typically reserved for more premium sleeping bags. Its dual, anti-snag zipper system makes sleepy midnight adjustments easy, and a draft collar along the zipper prevents uncomfortable cold spots from touching your skin. To help you fine-tune your temperature, our patented self-sealing foot vent adds instant ventilation at the toe, while the cinching hood locks in heat at the head (and doubles as a barrier when your pillow likes to run away). Plus, with a durable water repellent (DWR) treatment, a little rain will never ruin your peaceful night. Key Features Synthetic insulation provides lofty warmth, even when wet Dual zipper system for ease of use Patented self-sealing foot vents for fast and easy ventilation Draft dodger collar helps prevent drafts 20D nylon fabric for lightweight versatility Materials Insulation: SierraLoft (TM) Synthetic Shell Fabric: 20d Nylon Ripstop Liner Fabric: 20d Nylon Taffeta Tech Specs ISO Limit Temp Rating: 9deg F / -13deg C ISO Comfort Temp Rating: 20deg F / -7deg C Fill Weight: 36 oz / 1.021 kg Weight: 3 lb 12 oz / 1.71 kg Fits Up To: 5' 8" / 173 cm Length: 73" / 185.42 cm Shoulder Circumference: 59" / 149.86 cm Hip Circumference: 58" / 147.32 cm Footbox Circumference: 40" / 101.6 cm Stuff Sack Size (L x W): 16 x 8.5" / 40.64 x 21.59 cm | Sierra Designs Women's Synthesis 20deg