Sea to Summit Altitude Women’s 25-Degree Down Sleeping Bag

The Sea to Summit Altitude Women’s 25-Degree Down Sleeping Bag is a high- performance, versatile down bag, ideal for backpacking in a variety of temperatures and conditions. The mummy style features a shaped hood, oversized draft collar, and zipper draft tube to keep the cold out and the warmth in. High-loft, 750 fill power down insulation (Responsible Down Standard certified) is treated with proprietary ULTRA-DRY Down to improve reaction to moisture, retaining loft and performance in rugged conditions. A Thermolite insulated footbox provides instant warmth for the feet. The women’s specific design features shorter length options, and narrow shoulders to eliminate dead space and increase thermal efficiency; down chambers are mapped to a woman’s physiology to maximize warmth. Snug and cozy in the cold, the Free-Flow Zip System cools things down when temperatures rise: a full-length right-side zip, half-length left-side zip, and foot zip can be opened for ventilation or to turn the Altitude into a comforter. Bag can also be zipped to the Sea to Summit Ascent, Trek, or Traverse sleeping bags. The shell is made from lightweight 20D nylon, and an internal pocket holds small essentials. The Sea to Summit Altitude Women’s Down Sleeping Bag is available in two sizes: Regular (max user height of five feet seven inches) and Long (max user height of six feet). Includes Ultra-Sil compression sack. Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.