What are the Rab Kinetic Alpine Stretch Pants?
The Kinetic Alpine Stretch Pants are highly protective, breathable and stretchy waterproof shell trousers, designed for big mountain days and challenging high alpine adventures when freedom of movement and dependable weather protection are essential.
Created from 3-layer Pertex® Shield with a flexible 4-way stretch and excellent articulation, they offer the comfort of softshell trousers, moving naturally with you as you negotiate challenging terrain or gnarly ascents without compromising waterproof protection.
Materials & Technology
Pertex® Shield 3-Layer Fabric
The Kinetic Alpine Stretch Pants are built from 40D three-layer PERTEX® Shield, which is a soft, stretchy and highly breathable, waterproof fabric designed for low bulk protection in the mountains when weight, mobility and breathability are key.
The trousers' three-layer construction combines a waterproof, windproof and breathable membrane, robust 40D polyamide face fabric with 4-way stretch and a soft backer. The 40-denier nylon outer offers good levels of abrasion resistance for regular use in the mountains while remaining lightweight and flexible enough not to hold you back on challenging ascents. The thin waterproof and windproof membrane provides reliable protection from the elements. A soft backer protects the waterproof membrane from abrasion and improves next-to-skin comfort and durability when worn over base layers.
Although the material is only 40 denier thick, it feels reassuringly sturdy and comfortable to wear for big mountain days, when the weather's not playing ball.
4-Way Stretch Construction
The PERTEX® Shield outer fabric features a 4-way mechanical stretch, which, combined with a pre-articulated cut, provides exceptional freedom of movement and mobility, making them super comfortable and practical for all manner of mountain pursuits in wet conditions. From hiking to alpine climbing, ski-touring to mountaineering, these fantastic waterproof shell trousers offer unrelenting protection and all-day comfort.
Waterproof Performance
This impressive Pertex® Shield material delivers an exceptional hydrostatic head rating of 30,000mm for dependable waterproof protection in prolonged wet conditions, and a breathability MVTR score of 25,000 g/m2/24hrs, to allow excess heat and moisture to easily escape throughout the day to keep you feeling comfortable on challenging routes and summit pushes.
Fluorocarbon-Free DWR Finish
The outer fabric is finished with a fluorocarbon-free DWR (durable water repellent) coating to encourage rain to bead off the trousers' surface rather than soaking into the face fabric (also known as wetting out). This further enhances the trousers' waterproof properties and helps protect the waterproof membrane, without the use of harmful forever chemicals.
Features and Functionality
Fully Articulated Construction
As mentioned above, the trousers feature a fully articulated fit to enhance freedom of movement and mobility when tackling steep ascents and technical mountain terrain. This articulated cut makes them an excellent choice for high altitude climbing and ice climbing when the weather's not on your side.
Adjustable Waist
The trousers are fastened with a simple YKK® fly and feature a low-profile semi-adjustable hook-and-loop waistband to allow you to refine the fit over various layers to ensure they won't start slipping down as you move.
Mountain Ready Pocket Layout
For storage, you'll find three YKK® AquaGuard® pockets for secure storage of quick access essentials such as a GPS device, energy gels and snacks. The pocket layout includes one thigh pocket and two hand pockets, which have been designed to remain accessible when wearing a harness and keep the contents well out of the way when climbing and stepping up high.
Thigh Ventilation
Two side zips on the thighs provide effective ventilation by allowing excess heat to escape during demanding ascents or periods of higher activity. The zips feature two-way zippers to allow you to easily tailor the amount of ventilation in relation to the conditions, to keep you dry and comfortable throughout the day.
Adaptable Ankle Gusset
The trousers feature a zipped hem gusset that can expand the lower leg to allow the trousers to easily accommodate chunky mountaineering boots and ski boots. This helps keep the fit of the trousers slim enough around the lower leg for good foot placements on technical terrain, whilst adding enough versatility for a wide range of mountain activities.
RECCO® Reflector
The trousers feature an integrated RECCO® reflector, which provides a passive transponder that helps make you visible to mountain rescue teams in the event of an avalanche or outdoor emergency.
It's a clever little bit of kit that you won't even notice you're wearing! Recco Reflectors don't need any activation, power or function to do their magic as they already consist of a diode and antenna. Each Recco Reflector is built to last and will not age; it would only ever wear out if it was mechanically damaged.
Key Features
- Stretchy and breathable 3-layer Pertex® Shield for added protection in unpredictable weather
- Integrated RECCO® reflector, a passive transponder searchable to professional rescuers in the event of an avalanche or outdoor emergency
- Fully articulated fit for enhanced freedom of movement
- Semi-adjustable hook-and-loop waistband and YKK® fly
- 3 YKK® AquaGuard® external pockets; 1 thigh pocket and 2 hand pockets
- 2 YKK® zipped thigh vents for dumping excess heat
- Zipped hem gusset to be flexible across both alpine and ski-based activities
How do the Kinetic Alpine Stretch Pants fit?
The Kinetic Alpine Stretch Pants feature Rab's Regular Fit, meaning they are true to size. Whilst their articulated construction and 4-way stretch fabric provide excellent freedom of movement for versatile, active mountain use.
What are the Kinetic Alpine Stretch Pants best for?
- Alpine ascents
- Steep ski tours
- Ski-based mountain activities
- Technical mountain use
- Wet and unpredictable mountain conditions