Experience the perfect balance of comfort and versatility with the Sea to Summit Altitude AtI Women's down sleeping bag. This incredible sleeping bag provides warmth and coziness in cold conditions while ensuring a cool and ventilated feel as the weather warms up. Shaped to align with your natural sleeping position, the Altitude AtI offers exceptional comfort and is lightweight for easy transport, making it ideal for various outdoor adventures.

Features:

• ULTRA-DRY Down: Features 750+ Loft 90% Down Cluster Premium Duck Down, certified under the Responsible Down Standard (RDS), for superior insulation.
• Thermolite® Insulation: The foot section is equipped with Thermolite® insulation to instantly warm your feet.
• Free-Flow Zipper System: Includes a full-length YKK® #5 main side zip, half-length opposite side zip, and a foot zip for exceptional ventilation and the option to use it as a comforter.
• Internal Pocket: Conveniently stores your phone, GPS, or valuables.
• Shaped Hood, Oversized Draft Collar, and Zipper Draft Tube: Designed to keep the cold out and the warmth in.
• Includes Lightweight Ultra-Sil Compression Bag and Storage Cell for easy packing and organization.
• Form a Snug Double Sleeping Bag: You can zip it to any Ascent, Trek, or Traverse sleeping bag for added flexibility.

Specifications:

• BAG SERIES: Altitude 1
• BAG WEIGHT:
  • ALTITUDE I (-4°C) REGULAR: 1080g
  • ALTITUDE I (-4°C) LONG: 1170g
  • ALTITUDE II (-10°C) REGULAR: 1280g
  • ALTITUDE II (-10°C) LONG: 1390g
• COMPRESSED VOLUME (ASTM STANDARD):
  • ALTITUDE I (-4°C) REGULAR: 6.5 L
  • ALTITUDE I (-4°C) LONG: 8.3 L
  • ALTITUDE II (-10°C) REGULAR: 8.1 L
  • ALTITUDE II (-10°C) LONG: 9.8 L
• COMPRESSION SACK:
  • ALTITUDE I (-4°C) REGULAR: S - 10L to 3.3L
  • ALTITUDE I (-4°C) LONG: S - 10L to 3.3L
  • ALTITUDE II (-10°C) REGULAR: M - 14L to 4.5L
  • ALTITUDE II (-10°C) LONG: M - 14L to 4.5L
• FILL WEIGHT:
  • ALTITUDE I (-4°C) REGULAR: 520g
  • ALTITUDE I (-4°C) LONG: 580g
  • ALTITUDE II (-10°C) REGULAR: 720g
  • ALTITUDE II (-10°C) LONG: 800g
• FITS UP TO HEIGHT:
  • ALTITUDE I (-4°C) REGULAR: 170 cm
  • ALTITUDE I (-4°C) LONG: 183 cm
  • ALTITUDE II (-10°C) REGULAR: 170 cm
  • ALTITUDE II (-10°C) LONG: 183 cm
• SEASON RATING:
  • ALTITUDE I (-4°C) REGULAR: 2.5 Season
  • ALTITUDE I (-4°C) LONG: 2.5 Season
  • ALTITUDE II (-10°C) REGULAR: 3 Season
  • ALTITUDE II (-10°C) LONG: 3 Season
• WOMEN'S TEMP RATING (EN COMFORT):
  • ALTITUDE I (-4°C): -4°C
  • ALTITUDE II (-10°C): -10