"With a premium on space and weight during your camping or hiking adventures, you'll be glad you brought along a Marmot NanoWave 25 Mummy Sleeping Bag. The lightweight, highly compressible properties make it easy to pack. The construction features spirafil insulation, a unique blend of large, spiral hollow fibers for loft, and small polyester fibers for warmth, softness, and compressibility. Comfortable blanket construction with thermal bonding ensures high tear strength and long-term durability. EN-tested for reliable temperature rating, this versatile Marmot sleeping bag has a soft 100% polyester plain-weave shell and lining with full-length, locking YKK 2-way zipper and snag-less draft tube. Feely drawcords offer easy-to-find convenience in the dark. Imported. Soft 100% polyester plain-weave shell and lining Lightweight, highly compressible properties Warm spirafil insulation Thermal bonding for long-term durability EN-tested for reliable temperature rating Locking YKK 2-way zipperSpecs: Regular: 72""L; Weight: 2 lb. 14 oz. Long: 78""L; Weight: 3 lb. 3 oz."