If you like the Airblaster QSJ, but want an even more lightweight and compact--yet equally toasty--package, then look no further. Tightly woven 75 denier mini ripstop outer fabric is durable and lightweight, while the 20 denier micro ripstop lining is ultra soft, heating up instantaneously as you slip into this Beast. 100 gram Primaloft insulation is packable, and provides more warming power than 120 gram standard insulation. 5K outer fabric waterproof rating.

• 5K mm waterproofing
• 5K g/m breathability
• Blaster Fit
• 100g Primaloft packable insulation
• 5k mini ripstop
• Zippered chest pocket
• 20 denier micro ripstop lining
• Suede silicon airpill patch at left pocket