Rab Cirrus Ultra Hoody – Premium synthetic jacket for cold and wet mountain environments

Description

The Rab Cirrus Ultra Hoody is a high-performance synthetic jacket designed to offer an outstanding balance of warmth, weight, and moisture resistance. It uses PrimaLoft® ThermoPlume®+ insulation, which mimics down's compressibility and thermal capacity, combined with technologies designed to maintain comfort even in cold and wet conditions.

Its construction combines loose insulation and body-mapped sheet insulation, along with the reflective TILT lining, to maximize body heat retention. The result is a highly advanced garment within Rab's synthetic range, ideal for those seeking a technical jacket capable of performing in the mountains, winter trekking, and extended activities in variable weather.

Real technical performance

The Cirrus Ultra Hoody takes the performance of synthetic jackets a step further. Compared to a traditional down jacket, it offers a clear advantage in wet environments: it maintains its thermal capacity even when the weather turns cold, wet, or changeable.

The use of PrimaLoft® ThermoPlume®+ blown synthetic insulation provides a thermal sensation close to that of down, while the 20D Recycled Pertex® Quantum Pro outer fabric adds protection against wind, light snow, and moisture. Additionally, the TILT lining helps reflect heat back to the body, improving thermal efficiency in low-activity situations, belaying, or cold bivouacs.

Thanks to its durable design, high compressibility, and excellent performance in wet conditions, it is one of the most complete synthetic options in Rab's catalog for multi-day mountain adventures.

Quantitative technical specifications (Rab Equipment)

• Weight: 548 g (size M)
• Back length: 76.5 cm
• Insulation: PrimaLoft® ThermoPlume®+ blown synthetic insulation
• Amount of insulation: 247 g
• Outer fabric: 20D Recycled Pertex® Quantum Pro outer (38 gsm) with fluorocarbon-free DWR
• Inner lining: 10D Recycled Pertex® Quantum lining (28 gsm) with fluorocarbon-free DWR
• Technologies: TILT + body-mapped sheet insulation
• Rab Code: QIP-21

Comparison within the Rab range

Within Rab's synthetic insulation collection, the Cirrus Ultra Hoody is positioned as one of the most advanced options for warmth-to-weight ratio and performance in wet conditions.

Rab Cirrus Flex Hoody
Lighter, stretchier, and designed for constant movement. It's a more versatile option for aerobic activity, but offers less overall insulation than the Cirrus Ultra.

Rab Xenair Alpine Jacket
More geared towards dynamic performance and breathability during activity. The Cirrus Ultra prioritizes thermal retention and comfort in cold, wet conditions or multi-day activities.

Rab Cirrus Ultra Hoody
This is the right choice when you're looking for a very warm, compressible, and reliable synthetic jacket in cold and wet environments, especially for winter trekking, multi-day mountaineering, or alpinism where humidity can compromise a down jacket.

Recommended use

• Winter trekking
• Mountaineering in wet weather
• Alpinism and multi-day activities
• Cold bivouacs
• Belaying and prolonged stops

Is it for you?

The Rab Cirrus Ultra Hoody is ideal if you're looking for a premium synthetic jacket with a very high level of warmth and outstanding performance when the weather turns wet, cold, or changeable.

If you need a reliable garment for winter mountaineering, long routes, or activities where a down jacket might lose performance due to humidity, this is one of Rab's most complete and advanced options.