Set of 5 black socks with breathable mesh and reinforced toe and heel. 28-30cm [Men's Business Socks] Bamboo fiber is a natural fiber with excellent breathability and absorbency, reducing friction between the heel and the shoe, providing a comfortable fit, softness, tear resistance, breathability, and durability. Lightweight, lubricious, and delicate, soft and light, bamboo business socks have a cotton-like softness. They are gentle on the skin, drape well, and provide a special comfort. [Antibacterial and Odor-Resistant] Bamboo fiber business socks have a natural antibacterial effect. Good deodorizing effect due to sodium copper chlorophyll contained in the raw bamboo fiber. They are treated with antibacterial and odor-resistant processing, and the integrated sewn toe reduces friction between the foot and the shoe, improving blood circulation. [Absorbent & Breathable] The instep of the men's business socks is made of mesh knit, providing excellent comfort. The breathable instep quickly wicks away moisture, keeping your feet dry. [Good Elasticity] Gentleman's socks have excellent elasticity and relieve foot fatigue. Rib top design. The socks won't slip off. The arch support prevents the socks from slipping. If you don't mind stretching the socks out of the box, You can get an additional 200 yen discount. Thank you for viewing. 247