Ecco Biom Terrain Women's Walking BootsGORE-TEX UpperConstructed using a durable Yak leather upper, the Ecco Biom Terrain Walking Boots offer a wider range of protection to help you gain the maximum from your footwear. The leather upper keeps the feet protected from debris and sharp objects as well as minimising the risks of wear and tear. Perforations within the leather increase ventilation ensuring your feet can breathe easy as you power through on hot and humid days. To avoid damp feet, and therefore dampened spirits, a GORE-TEX membrane resides inside the boot; supplying a combination of durable waterproofing and optimised breathability. Sometimes it's hard to stay dry without developing that distracting clammy feeling, but GORE-TEX keeps water on the outside while letting perspiration escape from the inside; keeping sweat to a minimum and you, cool and comfy. Offering 360 degree's of climate control, the construction keeps water from penetrating inside the boot whilst ensuring perspiration is allowed to escape. Within the boot and acting as a lining, Primaloft microfibre insulation works to keep you toasty and warm on bad weather days. The 200g insulation keeps your feet warm, dry and comfortable for all-day wear. Completing the upper is a lace closure system which locks down the midfoot for distraction-free strides.