Fit & Design: Award-winning design has been updated for even greater warmth retention and adjustability across temperatures Second-generation Thermo Gill(TM) vents extend the comfort range with a new multi-stage zipper system Chevron baffle construction better compartmentalizes down for a more uniform loft and down migration prevention Stretch construction at the knees for comfortable side sleeping Offset zipper creates a thermally efficient seal while an update profile secures warmth closer to the body Includes a compression sack for easy storage and travel Technology: Overstuffed with premium 800 FP hydrophobic down that is PFC-Free and 100% Responsible Down Standard certified, ensuring humane treatment and traceability throughout the supply chain Toester(TM) waterproof and breathable footbox utilizes a layer of synthetic insulation to protect the down and deliver maximum toastiness for toes Additional Details: Constructed with 100% recycled bluesign(R) approved shell and liner fabrics, making it an eco-friendly addition to your gear