Atmos is here to help manage your personal microclimate. This light and breathable jacket offers instant warmth when you need it, and packs away small when you don&';t. The underarm vents, heat-trap cuffs and neck will make it a go-to for big mountain missions, but it&';s just as effective as your daily driver. The 700-fill Wool x Down composition balances two of nature&';s finest insulators - with duck down for loft and merino wool to help manage moisture for outstanding climate control, you will be comfortable no matter what the conditions. Atmos uses a light, soft touch 100% recycledPertexA(R) Quantumshell to allow the insulation to fully loft. A PFC-free durable water repellent (DWR C0) finish sheds light rain and snow to provide additional weather protection. Fit: Standard Features: Wear as a mid layer or outer layer Heat trapping neck and wrist cuffs Underarm vents Zipped chest and hand pockets 'Pack it like it&';s hot&'; left hand pocket - pack the jacket into itself for easy storage 700 fill Responsible Down Standards (RDS) certified duck down combined with 100% Merino wool 100% recycled polyester PertexA(R) Quantum ripstop shell Shell treated with C0 Eco-Friendly DWR - PFOA and PFAS free. Fabric: Merino Wool x Duck Down Blend: Insulation: 70% Duck Down 30% Merino Wool / Shell: 100% Recycled Polyester PertexA(R) Quantum Ripstop / Lining: 100% Nylon / Excludes:Trims