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Sierra Designs Synthesis 35 Degree Sleeping Bag

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Our Price: $129.95

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Built with synthetic insulation and lightweight material typically reserved for a higher price point, the Sierra Designs Synthesis 35 Degree Sleeping Bag packs light but hits heavy with its feature set. Sierra Designs wanted to offer a truly back-packable synthetic mummy bag to the masses that would allow people to get great gear at a great value and they knocked it out of the park with the 2lb 4oz Synthesis 35 Sleeping Bag. The Synthesis 35's Synthetic insulation can handle some of the elements of the backcountry way better than down because it delivers lofty warmth, even when wet! 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. The Synthesis 35 is also equipped with a draft dodger collar helps prevent drafts and anti-snag zipper tracks that make opening and closing the bag a snap. The dual zipper system also allows you to pull the top part of the bag out turning it into a comforter style bag, great for side sleepers and stuffy sleepers. Looking for a fully loaded bag with top shelf features at a fantastic price point? Look no further than the Sierra Designs Synthesis 35 Degree Sleeping Bag.

Key Features

  • Synthetic insulation provides lofty warmth, even when wet
  • Patented self-sealing foot vents for fast and easy ventilation
  • 20D nylon fabric for lightweight versatility
  • Dual zipper system for ease of use
  • Draft dodger collar helps prevent drafts


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

Sierra Designs Synthesis 20/35/50 Synthetic Bags