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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. 12212 ZEPHYR

Although the fashions for rock boots have pushed development into increasingly asymmetric shapes, many people can still benefit from the more classic shape of shoes such as the Boreal Zephyr. 

Product Info
  • UPPERS: High quality Split leather with lateral anti-stretch stitching

  • LINING: Canvas lined heel

    ​WEIGHT: ​542 grs./pair (size 6 UK)
  • MIDSOLE: Full insole and midsole

  • SOLE: Boreal FS-QUATTRO. Thickness. 4.6-5.2 mm depending on size

  • CONSTRUCTION: Board Lasted

  • USAGE: Long routes, friction climbs or classics


  • Featuring a more symmetrical last shape, the Zephyr is ideal for those who find highly asymmetric shapes uncomfortable. A board lasted construction (a construction method normally associated with high quality trekking boots) provides excellent support and durability, and allows the use of small edges. 

  • A canvas lining to the heel and lateral anti-stretch stitching on the high quality split leather upper provides comfort and retains shape over time. Full length lacing ensures a precise fit. Finally, the sticky and durable FS Quattro™ rubber blends edging support with great friction. Zephyr is close fitting, comfortable, precise and durable. It is ideally suited to long routes and classic climbs.