LOWA Zephyr MK2 GTX LO Wide Footwear — Black

The Zephyr MK2 GTX LO Wide is a low-cut boot in wide fit, designed for those operating on uneven terrain who fall towards the wider end of the sizing spectrum. The internal upper height is 80 mm, the external height 115 mm, with a boot shaft height of 85 mm in accordance with EN ISO 20347:2012: enough to protect the ankle without restricting stride on fast-moving terrain.

The GORE-TEX Extended Comfort membrane manages both waterproofing and breathability simultaneously: unlike a standard membrane, the Extended Comfort variant is designed for high-intensity activity, where heat build-up inside the boot is the primary concern. The result is a boot that stays dry from the outside without trapping the vapour produced by the foot during prolonged movement. The water-repellent suede upper at 1.4–1.6 mm combined with CORDURA nylon adds abrasion resistance in high-wear areas without adding bulk to the profile: the stated weight is 1,020 g per pair, measured in UK size 8.

The dual-density polyurethane midsole distributes load differently between the heel and forefoot, reducing fatigue during long sessions. The LOWA-Monowrap construction wraps around the outsole and extends up the upper to form a continuous frame: this reduces lateral flex without adding separate rigid reinforcements, with the benefit that the boot maintains a consistent response even after the materials soften during break-in. The trade-off to consider is typical of low-cut boots with a membrane: lateral protection is lower than a high-cut boot, and in the event of prolonged submersion water can enter from the top; the LO cut is the right choice when mobility and speed of movement matter more than full protection from deep water.

Key features

• The GORE-TEX Extended Comfort membrane keeps the foot dry even at high movement intensity, where standard membranes tend to trap heat.
• The Wide fit is calibrated for broad feet: it prevents lateral compression that causes fatigue and pressure points during long sessions.
• Water-repellent suede at 1.4–1.6 mm combined with CORDURA offers abrasion resistance in the most exposed areas without adding unnecessary weight.
• The LOWA-Monowrap construction forms a continuous perimeter frame that reduces lateral play without stiffening the stride.
• The dual-density polyurethane midsole distributes load differentially, limiting fatigue during extended outings.
• CE certification EN ISO 20347:2012 with O2 WR FO HI CI HRO SRC requirements: the boot meets verified professional protection standards.