Ideal for adventures with a base camp, the Amplitude down sleeping bag brings spacious luxury and incredibly versatile ventilation options to wherever your travels may take you. Each side of the Amplitude has a full-length side zipper; a third zipper can be found in the foot box.

High-lofting down and quality construction keeps you cosy when it’s cold, and the zippers provide temperature regulation up to the point where you remove the upper section and sleep under it as a quilt.

  • ULTRA-DRY Down 750+ Loft 90% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
  • Vertical baffles over the chest to prevent down shift as you roll over in your sleep
  • Full-length YKK #5 main side zips and foot box zip provide unmatched ventilation and allow the top section to be removed and used as a comforter
  • Shaped hood and zipper draft tubes keep cold out and warmth in
  • 30D Nylon shell
  • All versions, except the double, include an internal zipper pocket
  • Includes lightweight Ultra-Sil compression bag
  • Form a snug sleeping bag for two by zipping to another Amplitude or Ascent, Trek, Traverse, Altitude, Journey or Venture sleeping bag
  • Temperature Rating (EN Lower Limit): – 4ºC

Maximum User Height:

  • Regular: 183cm
  • Long: 192cm

Compressed Volume:

  • Regular: 6.3L
  • Long: 8L


  • Regular: 1,095g (450g fill)
  • Long: 1,205g (520g fill)