Mammut Sphere MTI 3-Season Sleeping Bag: 23 Degree Synthetic

Full-spectrum warmth for three seasons.

When it comes to keeping you warm in conditions that change every 20 to 60 minutes, rely on the Mammut Sphere MTI Sleeping Bag: 3-Season to provide furnace-like fervor as you sleep. Thanks to its unique and ultralight Ajungilak MTI Endurance synthetic insulation and 23-degree Fahrenheit rating, this three-season bag features an excellent weight-to-warmth ratio and is designed to insulate, even when wet. Not to mention, the bluesign-approved 20D prolightTX exterior fabric is fashioned with a DWR-treatment that adds extra protection against precipitation and moisture, while the 20D lightTX is also bluesign approved and assures dependable moisture control as you snooze. Additionally, the Sphere is outfitted with a Performance Hood (complete with Advanced Visibility) and draft collar that offer excellent protection against sneaky cold fronts. So whether you're sky-high in a bivy or at basecamp, garnering beauty rest in anticipation a full day's worth of adventures, the Mammut Sphere MTI Sleeping Bag will keep you warm from the moment you crash into REM dreamland.

  • 23F temperature rating
  • Ajungilak MTI Endurance synthetic insulation
  • Mummy shape
  • DWR treatment
  • 20D prolightTX exterior
  • 20D lightTX lining (moisture control)
  • Draft collar
  • Hood
  • 3/4-length zipper
  • Stuff sack included
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