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Sierra Designs Synthesis 35° Sleeping Bag

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Sale price $139.99

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When a long day that’s been chock-full of fun adventures and awe-inspiring sights comes to a close, it’s time for you and your cabin group to set up camp for the night in the wilderness. All ready for sleep, you crawl into your sleeping bag and get yourself comfortable. As your eyelids close and you begin to doze off, a faint smile is likely to form on your face over how cozy you feel inside your Synthesis 35° Sleeping Bag from Sierra Designs!

Sleep is just as important to survival as food and water! A good night of sleep grants us all kinds of benefits like strengthened memory, weightloss—even a healthier imagination. Create the right mindspace for your camp stay when you sleep in the Synthesis 35° Sleeping Bag.

Sierra Designs combines SierraLoft, their synthetic insulation, along with lightweight, durable materials that sets apart premium sleeping bags like the Synthesis 35° from all the others. Silky and soft, this insulation offers high loft, a quick bounce-back after compression, as well as an excellent warmth to weight ratio. SierraLoft is lighter, warmer, and more resistant to cold and wet conditions than other synthetic insulations on the market.

Years ago, in order to make outdoor gear that was both effective as well as breathable, people used a water repellent coating containing man-made chemicals called PFCs. Unfortunately these chemicals have since been found to be harmful to the environment. To avoid using these unfavorable chemicals, Sierra Designs has implemented new technologies to make an effective water repellent coating that’s also breathable. You’re sure to stay dry in your Synthesis Sleeping Bag!

This sleeping bag delivers instant venting around your toes with Sierra Designs patented self-sealing foot vent. Combined with the cinching hood around your head that keeps heat trapped inside, the Synthesis 35° allows for fine-tuning the temperature. To make things extra comfortable, a draft collar along the zipper prevents cold spots from seeping in and the dual, anti-snag zipper system makes it easy to adjust when you’re half-asleep. Keep those nights at camp cozy and warm with the Synthesis Sleeping Bag!

Think Outside.


The Sierra Designs Story

Founded in 1965 by Bob Swanson and George Marks, Sierra Designs was built on the basis of providing excellent gear to adventurous spirits from all walks, whether you’re an expert thru-hiker or a first-year summer camper. Bob and George first met as co-workers at The Ski Hut, an outdoor equipment retailer in Berkeley, where the two often dreamed of owning their own business. This outdoorsy duo got their wish one day when a wealthy benefactor gave them the money they needed to seed their new company: Sierra Designs. The Sierra Designs family is still composed of outdoorsy folks who all happily to do their part to protect our environment. For them, it means making products with as little impact to the environment as possible such as using recycled material and creating an environmentally-friendly water repellent that’s PFC-Free. As they like to say, “Think outside, because happiness is found in the adventure.”

  • Material: 20D Nylon Fabric for Lightweight Versatility
  • 35° Mummy Style Sleeping Bag
  • 20D Nylon Ripstop Shell
  • 20D Nylon Taffeta Liner
  • Insulation: SierraLoft™ Synthetic
  • Fill Weight: 23oz
  • Dual Zipper System for Ease of Use
  • Patented Self-Sealing Foot Vents for Fast and Easy Ventilation
  • Draft Dodger Collar helps Prevent Drafts
  • Minimum Weight: 2lb 4oz
  • Fits Up To: 6'
  • Length: 76”
  • Shoulder Circumference: 62"
  • Hip Circumference: 56"
  • Footbox Circumference: 40"
  • Mesh Stoarge Bag Size: 20”L x 12"W
  • Stuff Sack Size: 15”L x 7.5"W

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