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Heel Fit System
The Heel Fit System (HFS) consists of anatomically sculpted pieces of foam padding which hold the heel comfortably and securely in place to avoid unwanted movement.




Trekking boots require a snug fit around the heel area to prevent unwanted movement which can lead to excessive friction and blisters. HFS is a system of anatomically shaped high quality foam padding which helps to comfortably hold the heel securely whilst accommodating different heel shapes.

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Comfort Flex System

CFS is a system to improve the flexibility of hiking boots around the ankle area in a fore/aft direction. CFS greatly enhances the ergonomics of the boot resulting in a more natural and comfortable walking action.

Hiking boots with uppers made from stiff materials can restrict the natural articulation of the ankle joint causing discomfort when walking.  CFS answers this problem by carefully positioning panels of soft pliable materials in specific areas of the upper. These soft compressible panels act like hinges to allow the natural articulation of the ankle in a fore/aft direction.

Hard incompressible components such as lace eyelets are either made from soft textile materials instead or repositioned so as to not cause pressure points or impede articulation.  CFS greatly enhancing the ergonomics of hiking boots is resulting in a more comfortable and natural walking action.

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Dry-Line

Dry-Line® is much more than a waterproof membrane, it is a unique lining system developed by Boreal with superior performance and reliability. Dry-Line® is exclusive to Boreal.

Dry-Line® is much more than a waterproof membrane, it is a unique lining system developed by Boreal with superior performance and reliability. Dry-Line® is exclusive to Boreal.


Dry_Line_Grafico_EN_white_lores

Dry-Line® combines the waterproof laminate Sympatex 337 professional (a Sympatex® membrane with breathable micro-fibre lining) and a leather or synthetic outer layer. Between the membrane and lining is an air space created by a monofilament pile layer. Moisture vapor inside the boot enters this air space and is ‘pumped’ out of the boot during normal walking action. This vertical chimney like movement of water vapor is a key part of what makes Dry-Line® superior to other membrane systems.

Regular membrane systems can usually only attempt to breathe horizontally through the upper materials of the boot. In most boots this horizontal breathability is severely restricted by layers of leather, synthetic reinforcements, glue and rubber pieces which all combine to greatly impede the transmission of moisture vapor. 

Thanks to the unique structure of Dry-Line® Boreal boots are able to breathe both horizontally and vertically.


SYMPATEX MEMBRANE

The Sympatex® membrane used in Dry-Line® is a polyether/ester copolymer membrane. Unlike microporous membranes this membrane has no pores to clog, so its performance does not deteriorate with use. It is also much more elastic than other membranes making Dry-Line® far less prone to puncture damage, consequently Dry-line® lined boots have much better long-term reliability and durability than those with other lining systems. Sympatex® is halogen and solvent free and is fully recyclable making it the most eco-friendly membrane on the market.


SHERPA
  • 45513 SHERPA
  • 45513 SHERPA
Ref. 45513 SHERPA
Sherpa

Boreal Sherpa is a tough trekking boot with a medium/low height ankle cuff and medium flex. The thick high quality split leather upper with rubber toe cap is very abrasion resistant and, unlike a smooth leather finish, does not easily show scuffs and marks. This makes Sherpa particularly well suited to trekking in rough rocky terrain. 

Product Info
  • UPPERS One piece premium quality waterproof 2.2 mm Split leather with Neoprene and Lorica. HFS padded heel system for a perfect fit. CFS flex system for maximum comfort. Rubber toecap for protection 

  • LINING Boreal Dry-Line® for absolute waterproofness + stay cool breathability

  • MIDSOLE Boreal PB-60

  • SOLE Vibram Aftersky. Dual density rubber sole

  • USAGE Trekking, backpacking, fell walking, 2-3 season use
  • WEIGHT 1554 gr. pair. Size 81⁄2 U.K.

Features

  • The upper is constructed in high quality premium split leather with neoprene and Lorica at the tongue and cuff. Our unique Dry-Line® lining system is fully waterproof and has superior moisture vapour transfer performance to help keep your feet dry in all weathers.

  • The high quality Vibram Aftersky® dual density outsole is durable, has deep lugs for great grip in all conditions and is well cushioned with polyurethane foam. A full length PB60 medium stiffness midsole provides excellent underfoot support on rough ground.
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