Brand New Pair of EcoSox Breast Cancer Awareness Medium-Weight Hikers. Colors: Khaki w/ Pink. Great for hiking and outdoor activities, this boot sock is built to last. With a thick and durable build and soft bamboo viscose padding, Ecosox medium weight hikers are also great for construction, industrial and commercial work. One of the key benefits of Ecosox hikers is that they’re thermo-regulating, keeping feet cool all summer long while providing warmth throughout the winter. Available Sizes: Medium.