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FS Quattro

FS Quattro is a unique climbing rubber compound developed Boreal. This compound provides excellent abrasion resistance and consistent performance over a wide temperature range.

FS Quattro rubber is a specific formulation developed by Boreal. It was designed to provide consistent high performance over a wide temperature range, and to offer a long life span. This highly versatile rubber is ideal for all-round rock shoes, with a perfect blend of high friction and durability.


Ref. 11178 NINJA

Boreal Ninja is a true classic; the original, definitive climbing slipper. Soft, sensitive and sticky.

Product Info
  • UPPERS: High quality Split leather with elastic tootwrap system. Rubber reinforcement on the toes

  • LINING: Unlined

    ​WEIGHT: ​376 grs./pair (size 6 UK)
  • MIDSOLE: Half Texon midsole

  • SOLE: Boreal FS-QUATTRO. Thickness. 4 - 4.6 mm. depending on size

  • CONSTRUCTION: Slip-lasted

  • USAGE: Sport climbing, bouldering, competitions and training


  • A premium quality unlined split leather upper with elasticated foot wrap system hugs the foot while retaining maximum sensitivity. A tension band across the forefoot prevents unwanted “bagging” at the toe and adds friction during tricky toe-hook moves. 

  • Sticky FS Quattro™ rubber and soft half midsole mean that the Ninja is incredibly adept at padding up friction slabs. This ultra lightweight shoe changed what was possible when it was introduced over 25 years ago. This legendary shoe is still an ideal choice for any route or problem where sensitivity is paramount.