Keep your load light and compact with the lightweight, highly compressible, and exceptionally comfortable Marmot NanoWave 55°F Sleeping Bag. EN-rated at 60.1°F for comfort, 54.3°F for lower limit, and 33.1°F for extreme, so this mummy-shaped bag is ideal for summer season use. Synthetic SpiraFil high loft insulation helps you stay warm even when it’s wet. Furthermore, the 100\\% Polyester Taffeta (2.2 oz./yd.) shell is treated with a Durable Water Repellent (DWR) coating to shed moisture. The 100\\% Polyester (1.3 oz./yd.) liner offers a more cool, comfortable feel to the inside.
Material Construction and Performance
• Light, versatile, high-performance 45°F mummy bag for summer-season backpacking
• Lightweight and durable 100\\% Polyester Taffeta (2.2 oz./yd) shell
• Shell is treated with a Durable Water Repellent (DWR) coating to shed moisture
• Marmot’s synthetic SpiraFil High Loft Insulation delivers great performance even when wet
• Insulation is light and compressible for easy packing and carrying
• 100\\% Polyester (1.3 oz./yd.) liner offers a more cool, comfortable feel to the inside
• Blanket construction to prevent cold spots
• EN-rated at 56.1°F for comfort, 49.6°F for lower limit, and 27.1°F for extreme
Design and Additional Features
• “Feely” draw cords let you tighten the hood and are easy to find in the dark
• Full-length zipper makes it extra-easy to get in and out
• 2-way zipper sliders offer option to open bottom for ventilation
• Snagless draft tube to prevent fabric from catching in the zipper
• Zipper garage
• 2 hang loops for storing and/or hanging your bag to dry or air out
Before You Order
Before ordering, compare part number 248321, en comfort limit 60.1°F, en lower limit 54.3°F with the existing camping sleeping bag and installation requirements.
Frequently Asked Questions
What does the source list for en comfort limit?
The source lists en comfort limit as 60.1°F for this product.
What does the source list for en lower limit?
The source lists en lower limit as 54.3°F for this product.









