Used for one day during a Yakushima mountain climb. Suitable size: 23cm-25cm (free size) High-quality material: These hiking socks are softer than regular socks. They are also sweat-absorbent, quick-drying, breathable, deodorizing, and non-slip. The cushioning along the sole of the foot provides perfect support. The Y-shaped design relieves stress and provides excellent comfort, reducing fatigue in the arch of the foot. Suitable activities: Hiking, mountain climbing, skiing, camping, mountain biking, trail running, backpacking, and travel during outdoor activities.