Wrap yourself head to toe in Big Agnes' soft, temperature-regulating merino Wool Sleeping Bag Liner. Merino wool has excellent heating and cooling properties depending on your body's needs for heating or cooling in different environments. Slip it into your sleeping bag to reap the benefits of this amazing fiber or cozy up into it for an added layer during travel or cool nights star gazing.

PRODUCT FEATURES:

• Features a generous 42" side opening; snap closed for increased insulation or open for maximum ventilation

• Keeps your sleeping bag clean and protected while adding 5 - 10˚ of warmth
• Designed to regulate your temperature in a variety of conditions and uses
• Wool's natural thermal properties are ideal for adding heat in the winter and cooling you off in the summer
• Stands alone as a packable layer for travel and warm-weather overnights under the stars