Hyperlite Mountain Gear thought of K2, the Latoks and the Hayes Range (places where weight really makes a difference) when they honed their 4400 Ice Pack for the rugged alpine climber and ski touring maniac. HMG streamlined this minimalist expedition backpack to carry exactly what you need and nothing more for multiple days in the most extreme or high altitude environments. It’s large enough for the traverse in, yet minimalist and light enough for the day on the wall. Like all of their 70-liter packs, this ultralight pack has additional plastic frame sheet for added load carrying capacity. Made from 100% waterproof Dyneema® Composite Fabrics (formerly Cuben Fiber), the 4400 Ice Pack is highly durable and weatherproof.

Features:

• Made in Maine
• External crampon and ice axe attachment system
• Four external daisy chains
• Removable, contoured aluminum stays
• Dyneema® Hardline shoulder straps with 3/8” closed cell foam and spacer mesh
• Internal plastic frame sheet for added back panel support
• 1/4” foam back panel pad
• Compression System:
  • Roll-Top closure system with side compression straps for vertical compression
  • Four side compression straps for horizontal compression
  • Top Y-strap compression -- Designed to secure gear
• Internal zippered pocket
• Dyneema® Hardline dual-density hip belt with 1/8” closed cell rigid foam, 1/4” closed cell foam and spacer mesh
• Hip belt optional with gear loops or zippered pockets with #5 YKK zipper
• Adjustable sternum strap with self-tensioning elastic
• Proprietary seam sealing on all side seams and behind all sewn-on pack features

Technical Specifications:

• Weight: 2.56 lbs | 41.0 oz | 1162g
• Load capacity: 30 – 65 lbs
• Materials:
  • Body: 150D Dyneema®/Poly hybrid
  • Bottom: Double reinforced 150D Dyneema®/Poly hybrid
  • Crampon Patch: Dyneema® Hardline
• Volume: 4400 cu. in. (70L)
• Dimensions:
  • Top Circumference: 45” (114.3cm)
  • Bottom Circumference: 37.5” (95.3cm)
  • Height (fully unrolled): 38.5” (97.8cm)
  • Back Width: 10.5” (26.7cm)