For those with a healthy obsession of all things ice and heights, the PhD Pro Mountaineer was designed to support your every move above tree line. With 20-30mmHg of graduated compression, extra friction protection, and a 4 Degree‚Äö√Ñ√∂‚àö√ë‚àö‚àÇ‚Äö√†√∂‚àö¬¥¬¨¬¬¨¬¢ elite fit system, your feet will be the last thing on your mind as you hang, clip, and climb your way to any summit.