Trouser socks, also known as dress socks, are designed to be worn with formal or dressier attire. Here's some information about them:

Features of Men's Trouser Socks:
Thin and Sleek Design: Trouser socks are typically thinner than athletic or casual socks, and they have a sleek appearance that complements formal outfits.
Material: They are often made from materials like fine cotton, wool, silk, or synthetic blends. The choice of material depends on personal preference, climate, and the level of formality.
Length: Trouser socks usually reach up to the calf or just below the knee, ensuring they stay hidden under dress pants.
Colors and Patterns: While black and navy are common colors for trouser socks as they match formal attire, there are also various shades and subtle patterns available to add a touch of personal style.
Comfort: Despite their formal appearance, modern trouser socks are designed with comfort in mind. They may feature cushioning in the sole or arch support to ensure you stay comfortable throughout the day.