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 Synthesis 35, 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 REGULAR EN Limit Temp Rating: 25F / -4C EN Comfort Temp Rating: 35F / 1C Fill Weight: 23oz / 662g Minimum Weight: 2lb 4oz / 1021g Fits Up To: 6' 0" / 183 cm Length: 76in / 193 cm Shoulder Circumference: 62" / 152 cm Hip Circumference: 56" / 142 cm Footbox Circumference: 40" / 102 cm Mesh Stoarge Bag Size (LxW): 20 x 12" / 51 x 31 cm Stuff Sack Size (L x W): 15 x 7.5" / 38 x 19cm LONG EN Limit Temp Rating: 25F / -4C EN Comfort Temp Rating: 35F / 1C Fill Weight: 25oz / 720g Minimum Weight: 2lbs 6oz / 1080g Fits Up To: 6' 6" / 198 cm Length: 82in / 208 cm Shoulder Circumference: 64" / 163 cm Hip Circumference: 58" / 147 cm Footbox Circumference: 42" / 107 cm Mesh Stoarge Bag Size (LxW): 20 x 12" / 51 x 31 cm Stuff Sack Size (L x W): 15 x 7.5" / 38 x 19cm