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Item #: 331998316

Travel lighter during summer backpacking trips and other weight-sensitive pursuits with an extremely packable forty-degree synthetic mummy bag that weighs under 2 pounds (regular length). High-performance Heatseeker Pro retains maximum heat without sacrificing compressibility or adding weight. The offset quilted bottom reduces cold spots where your body rests against the cool ground.


  • Insulated mummy bag designed for warmth in temps down to forty degrees
  • Optimized fill achieves a smaller packed size
  • Continuous-filament and cut-staple Heatseeker™ Pro insulation maximize thermal performance
  • Shaped hood for more warmth and comfort
  • Draft collar for comfort and to prevent heat loss
  • Pad loops for attaching the bag to a sleeping pad
  • Compression sack and storage sack included


  • Weight: 1 lb 14 oz (850 g)
  • Temperature: 35° F / 2° C
  • Fill Weight: 15 oz (425 g)
  • Shoulder Girth: 61" (155 cm)
  • Stuff Sack: 8” D x 14” L (20 x 34.6 cm)