No matter what the winter throws at you with the right gear you can keep pedalling through it. Our Isoler Merino Waterproof sock is designed to keep your foot firmly away from the elements. We've used a Nylon blend outer fabric for its hard wearing properties to help keep the sock wearing well no matter the abuse. The inner fabric is a merino wool and acrylic blend giving you the comfort and wicking properties that we love from natural fibres combined with the acrylic for its wicking and wool like nature. Unlike man-made fibres Merino wool retains its thermal properties when it's wet to better regulate the body's temperature. The inner and outer sock have a waterproof windproof and breathable membrane sandwiched between them which is what keeps your foot dry and warm. The 4 way stretch fabric gives the perfect tailored shape Features a Terry fabric foot bed including toe and heel cups for added comfort and warmth A comfort and anti-abrasion panel on the Achilles adds both longevity and all day comfort Ribbed arch support gives a great fit and helps prevent unwanted movement This sock is designed for the bike but works and performs in any foul weather adventure Limited lifetime warranty