There are also graphic T-shirts that have pictures, logos, or text printed on them. These are great for showing your personality, favorite bands, hobbies, or brands.
The fabric of a T-shirt matters a lot for comfort. Cotton is the most common and is soft, breathable, and good for all seasons. Linen is lighter and cooler for hot weather. Polyester and blends are often stretchy, durable, and quick-drying.
Some T-shirts are made with moisture-wicking fabric, which is great for workouts because it pulls sweat away from your skin and dries fast. Look for these in athletic or gym T-shirts.