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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

Some adventures require more specialist equipment. High, cold ascents on technical walls demand the performance of a rock boot, but the warmth and weather protection of a mountaineering boot. This is where Boreal Fire Invernal shines. 

Product Info
  • UPPERS: 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: ​670 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


  • 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 is the ideal choice for long climbs in cold conditions; winter ascents of alpine rock faces and high altitude faces.