The updated Pyro 15 for 2012, utilizes Sierra Designs' new Core Comfort Technology, to allow a comfortable and warm night wherever adventure takes you. The CCT construction ensures maximum loft and warmth around the core where it's needed the most. The Pyro 15 was 2011 recipient of the coveted Camping Life Golden Stake Editors' Choice Award and Elevation Outdoors Editors' Choice!!

By mapping the body's warmest and coolest parts, Sierra Designs' Core Comfort Technology places sleeping bag and apparel insulation where it's needed most- directly over the torso- to maximize heat retention for warmth without bulk. CCT apparel cools through non-insulated areas during high exertion activities and retains heat during times of low exertion while CCT sleeping bags require less insulation to keep users warm overnight.