Zappos.com is proud to offer the Mountain Hardwear - Hunker Down Parka (Blue Chip/Sapphire) - Apparel: What's the baddest type of fill to take the edge off a below-zero wind chill? DOWN! Darn right. ; Abrasion-resistant reinforcement panels on the shoulders and arms prevent wear-and-tear while you're moving through backcountry terrain. ; ...