Naigai Trail sock very suitable for mountain hiking lover. It made of merino wool blend fiber and knit in pile loop which provide comfortable cushion for the wearer. The material is strong enough on walk rubbing with compatibly thickness. The design of the sock also provide support on the arch fit of the walker from fatigue. The wearer can stand for -2 degree temperature. It absorb sweat rapidly and fast evaporate from the mesh design of the sock. The material also can have antibacterial function from protecting the wearer's health and neatness.