The Cirrus insulation has been used for the Nimbus Jacket; Cirrus is a 3M Featherless synthetic insulation that provides a high performance alternative to natural down. It was designed to mimic the look and feel of natural down with all the benefits and none of the drawbacks. It retains two times the loft of down when wet, breathes superbly, has no allergens, retains warmth even when wet (more so than Hydrophobic down), compresses easily and dries exceptionally quickly.
It's like having a little cloud of warmth around you, and produced a lightweight synthetic insulated jacket with the equivalent warmth of a 600 fill power down filled jacket. Mini stitch through baffles keep the insulation in place and give the Nimbus a clean and minimalist look. The filling compresses well when packed and is robust and durable. Its resistance to moisture, warmth when wet and speed of drying are extremely high; superior even to Hydrophobic down and previous synthetic insulation.
Pertex's Quantum fabric is used for the shell, this incredibly lightweight fabric keeps the filling under control, is windproof and highly breathable and an air-permeable Hyperlite nylon lining is used to optimise breathability. The combination of insulation and fabrics provide unparalleled levels of breathability making the Nimbus perfect for active use in cold and damp conditions as a mid layer or stand alone jacket.
The fixed hood is fully insulated and will fit over or under a climbing helmet and you get high quality YKK zips throughout. When not required the Nimbus will pack into its own pocket and stash almost unnoticed into your pack making it perfect jacket for all winter mountain activities.
Pertex Quantum outer fabric
100% nylon air-permeable lining
Cirrus powered by 3M Featherless insulation
Stitch through mini baffles
Over or under helmet hood with Lycra binding
YKK VISLON front zip with internal baffle
2 YKK zipped hand warmer pockets - left pocket doubles as a stuff sack.