Women's Synthesis 20°

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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 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


  • Insulation: SierraLoft Synthetic
  • Shell Fabric: 20d Nylon Ripstop
  • Liner Fabric: 20d Nylon Taffeta

Tech Specs

  • ISO Limit Temp Rating: 9° F / -13° C
  • ISO Comfort Temp Rating:  20° F / -7° 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