Comfort: suspenders are usually made of soft materials, such as cotton or silk, which can provide good comfort and breathability. For boys, this comfort is an important factor in choosing to wear suspenders.

2. Fashion: As a popular underwear style, suspender underwear is very fashionable. Many boys will think that wearing suspenders underwear can show their fashion taste and personality style.

3. Functionality: Some men think that suspender underwear can provide better support and comfort, especially during certain sports or activities. For example, suspender underwear can prevent the chest from being rubbed and uncomfortable during exercise and improve the comfort of exercise. Therefore, the reason why boys can wear suspender underwear is because of its comfort, fashion and functionality. So boys can wear suspenders.