Finally, we get the both of best worlds. The Electrum combines both synthetic and down insulation in a body mapped construction to maximize the benefits of both insulations in a smart design. The ground-level Spirafil® and water-resistant 650-power-fill down on the top are stuffed into a polyester and nylon fabric shell making this burly little bag warm and snug.
Features • Marmot Composite Construction Combines 650FP Down and Thermally Efficient SpiraFil® Insulations • Body-mapped Insulation Yields Maximum Thermal Efficiency without Added Weight • Certified 650 Fill Power Down • Down Defender to Improve Water-Resistance in Wet Conditions • EN Tested • Full Length Zipper • Snagless Insulated Draft Tube • Velcro®-free Face Muff • Two Hang Loops • Stuff Sack and Storage Sack Included • Zipper Guards • Materials: 30d 100% Nylon Ripstop 1.3 oz/yd • 70D 100% Polyester 2.2 oz/yd