CAT RUBBER
OCÚN CLIMBING LAB



THE SCIENCE BEHIND FRICTION

We have been developing adhesive rubber sole blends ever since we started making Rock Pillars and Ocún climbing shoes. The process involves scientific research in rubber laboratories and constant experimental testing of new blends through measurements in the lab and climbing on rock walls. Our goal is to maximize the friction performance of the rubber.

Our development team includes top performance climbers who are able to discern the slightest changes in the attributes of each blend. We test our new rubber soles on various types of surfaces from rock faces to climbing walls and under all conceivable conditions.






CAT RUBBER μ 1.1 and μ 1.5

Every Climbing Adhesion Technology (CAT) blend has a unique formula that determines the exact chemical composition and technological process. Because of this, it responds the way a climber needs. We have decided to differentiate our new CAT blends according to the μ value of static friction they achieved during adhesion tests.







CAT rubber μ 1.5

With the CAT μ 1.5 blend, we focused on achieving maximum adhesion between the sole and the rock wall. This rubber is softer and extremely adhesive. Thanks to this CAT μ 1.5 is ideal for the demanding climber and we use it on our high-performance models.


OXI QC

OXI LU

OXI S

OXI LADY


REBEL QC

PEARL

RIVAL







CAT rubber μ 1.1

The CAT μ 1.1 blend is the hardest and most resistant of our new blends. In adhesion tests it achieved very good results. Its main advantages are long lifetime and low abrasion. We use CAT μ 1.1 on our beginner models and on rock shoes that need to last a long time. Despite the emphasis on durability, the blend is also highly adhesive.


STRIKE QC

STRIKE LU

CREST QC

CREST LU


HERO



THE BETTER THE μ, THE BETTER THE FRICTION



μ (mu) is the coefficient of static friction. It expresses the ability of rubber to adhere to the base surface. Rubber blends typically have μ values under 1.0.  The correlation between μ and rubber adhesion is a direct relationship – the bigger the μ, the better the climber sticks to the rock.

µ ≤ 0,9 standard rubber

µ = 1,1 - 1,4 high friction rubber

µ ≥ 1,5 super sticky rubber






We have developed new rubber blends through Climbing LAB, a project based on the idea of intensive cooperation between developers and climbers. Only a true specialist in the field knows how to create the best rubber blends based on specific requirements. And only a top performance climber knows what actually works on a rock wall. Find out more about the development and testing of new rubber blends on our blog.