Injinji Run Lightweight Crew Black Bottoms and one secure zippered pocket

and one secure zippered pocket at the center back holds valuables and has a key loop

Pocket measurement (in cm): 7W x 8H

or mountaineering

Composition : Back insert: 100% Polyester

Injinji Run Lightweight Crew Black Bottoms and one secure zippered pocket281170BLK Designed for runners seeking comfort and low bulk performance, the Run Lightweight Crew sock delivers on all surfaces. The innovative five toe design prevents blisters and promotes total foot utilization. COOLMAX EcoMade fibers keep feet cool and dry, while ergonomic running sock construction and arch support ensure a secure, slip free fit. The mid calf height blocks dirt and debrisso nothing stands between you and your next adventure.