The Mizuno Men's Tajima Socks feature a polyester, nylon, spandex blend for comfortable, cool running. The Men's Tajima Socks employ a unique X wrap in the arch to prevent slippage and provide greater stability. The socks allow for coolness through a mesh venting construction and provide additional cushioning for an all around better fit. Picking the right running sock can be just as crucial as picking the right shoe. Nothing can ruin a run or race faster than wearing the wrong sock. Wearing an ill fitted or low quality sock can cause slipping, bunching, and the most common issue blisters. The dreaded little things are generally caused by heat, moisture and friction within our socks. If you are serious about running and want to keep your feet happy and healthy, give the high quality Mizuno Tajima Socks a try. Your feet will thank you.