Featuring Sealskinz own waterproof & breathable stretchy membrane these socks have an anatomical shape & hug your foot so they can worn just like regular walking socks. The elasticated instep & Achilles panel hold your foot providing support & comfort. There is extra padding on the toe, sole & Achilles area for increased comfort. Lined with Merino wool loop pile lining to increase warmth & wicking performance. To maximise the performance of these great socks you need to have a close fit, so please check out your size below. Totally waterproof, breathable & windproof. Mid weight sock offering the prefect balance of warmth & breathability. Merino wool lining for moisture control & comfort. Elasticated ankle & insteps offer support & a comfortable fit. Sealskinz Thermal Rating: 3 out of 5