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.

T-shirts also come in different fits. Slim fit T-shirts are tighter and show your body shape more. Regular fit is the classic style—not too tight, not too loose. Relaxed or oversized fit is loose and comfortable, often used in streetwear style.

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.