The sealskinz walking socks have been designed to deliver a comfortable and effective fit for a multitude of activities the thin weight mid length walking sock is totally water and wind proof and delivers maximum breathability perfect for long treks where things are likely to get wet and muddy the calf length coverage of the sealskinz walking sock is ideal for hikes protecting your ankles and lower calf without restricting movement in the slightest complete with an elasticated ankle amp