The dexshell trekking sock is a mid calf length mid weight merino wool terry loop sock the mid weight merino wool terry loop cushion pad runs from toe to heel up to calf with a waterproof breathable membrane to keep your feet dry and fresh this dexshell sock is ideal for trekking hiking and activities in arduous wet environments where you need to keep your feet from feeling cold and clammy the mid weight merino wool brings you superb warmth for on those colder days the dexshell trekking so