Mountain Hardwear HyperLamina Spark 32/0 Regular Sleeping Bag



Item #: 331767547

Highest performance synthetic bag on the market with thermally mapped insulation and half-length center zip maximize efficiency

NOTE: Find in Store Inventory levels are continuously changing. Please contact store to confirm availability is as shown.


  • Temperature Rating:32 F/ 0 C
  • Engineered to be lightest and warmest synthetic bag available
  • Proprietary welded Lamina™ construction enhances loft and eliminates cold spots
  • Zoned insulation maximizes warmth where it's needed most
  • Thermal.Q® insulation has outstanding compressibility and maintains excellent loft
  • Single #5 half length center zip with dual sliders minimizes weight and still allows for ventilation
  • Performance mummy cut is snug, reducing girth, weight, and bulk and maximizing thermal efficiency
  • Comfort footbox follows natural foot position for maximum warmth and comfort
  • Ultralight shell is soft and highly wind resistant
  • Face gasket and tailored hood comfortably block drafts at the hood opening and seal in warmth
  • Sil-Nylon compression stuff sack and mesh storage sack included


  • Shell: 22D Dobby
  • Lining: 20D Taffeta
  • Bag Shape: Performance Mummy Cut

Shipping Info:

  • Leaves the warehouse in 1-7 business days depending on order volume.
  • Items may be returned within 60 days of the order date to an Atmosphere retail store or an Atmosphere warehouse. Items must be returned unused/unworn and electronics unopened. See Online Return Policy and Return Instructions for more information.
  • Note: Shipping restrictions may apply based on location and product size.


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