This 3-season Mountain Hardwear bag has an expandable draft tube that makes it ideal for use with a variety of body sizes and climate conditions.

• Soft, Compressible Thermic MX™ fill is engineered to provide 3-dimensional, springlike loft for superior warmth and minimal weight
• Comfort-minded mummy shape maximizes warmth without constriction
• Quantum Expander provides exceptional versatility; zip it up for a snug, technical fit or unzip it for 8 inches of roomy, added girth
• Offset quilt construction precludes sewn-through seams and cold spots
• Contoured hood with face gasket forms around head to seal in heat
• Differentially cut shell and lining fabrics allow insulation to expand to its full loft, optimizing warmth
• Shaped footbox accommodates feet with room; fully lofted insulation enhances warmth
• Insulated draft tube backs 2-way, full-length zipper; insulated zipper gusset helps seal in heat
• Antisnag construction prevents fabric from catching in the zipper; locking sliders let you set and keep the zipper where you want for just the right amount of ventilation
• 2 welded pockets inside bag organize small essentials