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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.


Fire Invernal Guetre

The Boreal Fire Invernal Guetre is designed for the most serious, demanding routes at high altitude or extreme cold. With levels of insulation normally only seen in high altitude mountaineering boots, this rock boot works when the going gets really tough.

Product Info
  • UPPERS: Integral high abrasion Cordura gaiter with Sympatex®. High tenacity and abrasion resistant one piece Teramida with premium quality waterproof Split leather. Rubber rand protection

  • LINING: Boreal Dry-Line® for absolute waterproofness and superior breathability. Full internal triple Thinsulate® layers for thermal protection

    ​WEIGHT: ​780 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: Specialised boot for long climbs  in cold conditions, winter ascents and  high altitude.

    WEIGHT: 780 gr. pair. Size 6 U.K.


  • Externally, a highly abrasion resistant integrated Cordura™ gaiter with Sympatex™ lining provides the first defense against the elements. Uppers of highly abrasion resistant Teramida and premium quality split leather are combined with a waterproof and breathable Dry-Line™ membrane and super warm triple Thinsulate™ layers to create a warm, comfortable and durable cocoon for your feet. 

  • The board lasted construction (a durable construction method usually reserved for top quality mountaineering and trekking boots) with stiff midsole provides excellent support while standing on micro edges. Meanwhile, the sticky FS Quattro™ rubber provides excellent grip on the rock. The Fire Invernal Guetre is a highly specialized piece of equipment, developed specifically for long climbs in very cold conditions; winter ascents of alpine rock faces and high altitude faces.