Climbing demands a unique combination of features: full freedom of movement, precise moisture management, abrasion resistance, and wind protection on the wall. Unlike endurance sports, the effort is intense but intermittent, with static hanging phases where the body cools rapidly. Gear must maintain mobility while stabilizing temperature.
1. Thermal and Mechanical Requirements for Climbing
On the wall, climbers alternate between explosive moves and still periods. Cold sets in quickly, moisture lingers if the fabric doesn’t breathe well, and friction points require durable materials. Clothing must support movement without restricting flexion or extension.
2. Base Layer
A lightweight RWS-certified merino base layer prevents cold sensations caused by moisture. For climbing: Mefonna (100% lightweight merino) is ideal for sustained routes; Biafo balances breathability and warmth for cool days; Shirwali suits cold walls thanks to its higher weight (~240g).
3. Mid Layer
The fleece Kokanee is perfect for approaches and exposed belays: warm, breathable, stretchy, it moves with the torso and compresses easily into a pack.
4. Outer Layer
For windy cliff days, a windbreaker like SHANDAR protects without bulk. In unstable conditions, a lightweight AYAQ hardshell (such as LONAK) ensures moisture protection with an ergonomic cut designed not to restrict arm lift.
5. Bottoms
Climbing requires robust, breathable, highly mobile pants. The softshell RIMO offers optimal freedom of movement, effective moisture management, and enhanced durability thanks to Martindale-tested reinforcements. For long routes exposed to cold or wind, a technical pant like NUNATAK can complement the system.
6. AYAQ Expertise
Vincent Defrasne highlights that climbing combines two extremes: intense effort and immobility. A suitable base layer prevents temperature drops at belays. Mike Horn emphasizes the importance of mechanically resistant fabrics, essential for repeated contact with rock and gear.
Conclusion
Climbing demands a lightweight, breathable, and durable system. AYAQ layers — RWS merino, Kokanee fleece, Shandar windbreaker, lightweight hardshell, and RIMO pants — deliver maximum mobility and thermal stability from approaches to the most exposed pitches.