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Sierra Designs Synthesis 20


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Built with synthetic insulation and lightweight material typically reserved for a higher price point, the Sierra Designs Synthesis packs light but hits heavy with its feature set.

A dual zipper system makes getting in and out a breeze and gives you room to move about, while the self sealing foot vent lets you vent heat with ease.

Weight (min): 1,161 grams

In stock

SKU: SERR54 Categories: ,


  • 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
  • EN Limit Temp Rating: -6C
  • EN Comfort Temp Rating: 0C
  • Fill Weight: 814 grams
  • Minimum Weight: 1,161 grams
  • Fits Up To: 183 cm
  • Length: 193 cm
  • Shoulder Circumference: 152 cm
  • Hip Circumference: 142 cm
  • Footbox Circumference: 102 cm
  • Mesh Stoarge Bag Size (LxW): 51 x 31 cm
  • Stuff Sack Size (L x W): 38 x 19 cm


  • Insulation: Synthetic
  • Shell Fabric: 20d Nylon ripstop
  • Liner Fabric: 20d Nylon Taffeta


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