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You may find peace and solace trekking alone into a big green forest, but once night falls, the 15-degree Sierra Designs Utopia Sleeping Bag becomes your main source of comfort. The Utopia's Flex design uses elastic stitching to keep the quick-drying synthetic HeatSync insulation snug against your skin to eliminate cold spots, while still allowing you to move around in your sleep without constriction.

  • Rated down to 15° F, this bag is best suited for spring through fall nights in the mountains or winter nights in milder climates
  • HeatSync synthetic insulation compresses well and retains warmth even if it gets slightly wet
  • Offset Layer baffles reduce heat loss and cold spots
  • Flex stretch construction allows seven-eight extra inches of girth and helps eliminate dead air space inside the bag
  • Tough ripstop outer shell withstands trail abuse and feels soft against your tired body
  • A zippered draft tube, adjustable collar, and hood seal you off from cold summer weather
  • Shaped footbox doesn't restrict your natural sleeping position to keep you snoozing
  • A pillow pocket lets you insert a hoody or camp pillow (sold separately) for maximizing your sleepy times
  • A zippered chest pocket holds your headlamp for your nightly trip to the designated bush
  • Pad Locks hold your sleeping pad underneath so it stays put
  • Compression stuff sack packs the bag down to its 9 x 19in size
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