A movement-inspired, breathable shoulder season jacket with targeted insulation for core warmth and active ventilation to keep you dry.

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.

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