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Zenith is a unique high performance climbing rubber compound developed by Boreal. This compound provides outstanding friction and excellent hold on small edges.

Zenith rubber is a high performance rubber developed by Boreal. Zenith is designed for no-compromise performance, and features incredible friction properties combined with an ability to hold micro edges. This ultimate compound is featured on our highest performance rock shoe models. 


V2 Rand

The V2 Rand provides a 2-band tensioning system, ensuring a great fit for the heel and arch of the foot.

In most rock boots, the heel is tensioned with a basic single band of rubber, which simply pulls and compresses the heel cup. With the V2 Rand, Boreal have used 2 bands to tension a much larger area. By providing tension further towards the front, the shoe is pulled into the arch of the foot and the heel is more securely held. This eliminates any dead space, creating a precise and comfortable fit.

Ref. 11420 MARDUK

Boreal Marduk is one of our stiffest performance shoes, ideal for climbers looking for a bit more support on big routes or small holds. A subtle downturned last shape combined with our ultra sticky Zenith™ rubber will keep you glued on to the tiniest of edges.

Product Info
  • UPPERS: High quality Split leather with reinforced double strap closure. Integrated padded mesh tongue for comfort. Optimum fit from 2-way tension “V2 Rand”

  • LINING: Yes

    ​WEIGHT: ​495 grs./pair (size 6 UK)
  • MIDSOLE: Special anti-deformation midsole

  • SOLE: Ultra sticky Boreal ZENITH outsole. 4-4.5 mm thickness depending on size

  • CONSTRUCTION: Slip-Lasted

  • USAGE: Ideal for sport climbing, gym or long hard routes. Also suitable for edging on small holds.


  • The upper is constructed from high quality split leather with padded mesh tongue for comfort, and features a cotton lining for reduced stretch. A double width top strap allows the shoe to be cranked up tight without causing any pressure points. This combines with our V2 Rand™, a 2-part rand that tensions a much larger area of the shoe, to provide the ultimate heel fit. 

  • The semi-asymmetric and slight down curved last shape coupled with the stiff midsole ensure that micro edges can be used with confidence. Finally, super sticky Zenith™ rubber offers superior friction wherever you climb.

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