V-neck undershirts for men are a type of undershirt with a V-shaped neckline that dips down in the front. They are worn underneath regular shirts to provide an additional layer of comfort and protection against sweat and stains. V-neck undershirts are usually made from lightweight and breathable materials such as cotton or a blend of cotton and polyester. They have short sleeves and a fitted or loose cut, depending on personal preference. The V-neck style is popular because it allows for the undershirt to remain hidden beneath an open collar shirt, while also providing a subtle and stylish look when worn on its own. V-neck undershirts are versatile and can be worn for a variety of occasions, from workouts and outdoor activities to formal events and everyday wear.