The incredibly light and compressible Alta Sweater was designed for cold climate activities when sub-zero temperatures are expected.  Under your hard shell, the waist length full-zip 900 fill-power goose down sweater is Westcomb's warmest insulation layer for cold, demanding conditions.  By itself, the Pertex Quantum PRO shell fabric makes the Alta a comfortable, warm stand-alone jacket for off-mountain use.


Size:    XS, S, M, L, XL, 2XL

Weight: 11.5 oz | 326 g (medium)

Length: 29” | 74 cm (medium)

Fit: Regular

  • 2-way center zipper
  • Compressible & packable
  • 900 Fill pure Goose down
  • Light-weight
  • Durable water-resistant / DWR
  • Elasticized cuff
  • Elasticized hem
  • Mandarin collar
  • YKK® VISLON® zipper
  • Zippered hand pockets


  • Pertex QuantumPRO 
    • Content: 100% nylon 20D micro-ripstop
  • 900 Fill Polish Goose down (min. 90% down cluster content) 
    • Fill Amount:
  • Primaloft Gold 
    • Fill Weight: 100 gsm

Care Instructions

  • Machine wash in warm water (30°C) on gentle wash cycle.Front load washing machine recommended.
  • Close all zippers and or use garment wash bag.
  • Use light detergent or performance wash such as Granger's Down Wash.
  • Rinse twice.
  • Tumble dry on low heat with tennis balls or dryer balls such as those in Granger's Down Kit.
  • Do not iron.
  • Do not bleach.
  • Do not dry clean.
  • Store in a dry place.
  • NEVER use fabric softeners

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