Sleeveless T-shirts are also often seen as a type of tank top. The style leaves the shoulders bare and has straps over the shoulders. These straps can vary from thin to almost covering the entire top of the shoulder. These tops are best for warm weather or for layering with other T-shirts. For men, sleeveless T-shirts are also called muscle Ts because they leave the upper arms completely exposed. This style is also seen in many sports jerseys. For women, tank top styles have a wider range of variations. Tops with very thin straps and thin fabric are also called camisoles and are primarily used for layering. Other types of women's sleeveless T-shirts are often worn alone and can be plain or decorated.