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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.


  • 11183 NINJA JR. GREEN
  • 11182 NINJA JR. BLUE
  • 11181 NINJA JR. RED
Ref. 11181 NINJA JR. RED
Ninja Junior

A classic for your kids! Boreal Ninja Junior takes the same high quality materials, fit and performance of our adult shoes, and puts them into a kid friendly package. 

Product Info
  • UPPERS: High quality split leather. Adjustable heel. Easy to put on with a wide entry single strap closure

  • LINING: Unlined

    WEIGHT: ​305 grs./pair (size 29-30 EUR)
  • MIDSOLE: Half stiff midsole

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

  • CONSTRUCTION: Slip-lasted

  • USAGE: Perfect for growing kids


  • A high quality unlined split leather upper is fastened to the foot with a single wide-entry strap closure. This ensures the shoe is both easy to put on, and comfortable in use. A medium stiffness midsole and our sticky FS Quattro™ rubber provide the ideal blend of edging and smearing performance. 

  • An innovative strap closure at the heel means that each shoe is adjustable over 2 sizes, perfect for growing feet. The Ninja Junior is a comfortable, reliable and versatile shoe for all junior climbers.