Promotional t shirts have become a common way for different companies to advertise their services and products. They are great for branding your company, promoting an event and creating an atmosphere that will help identity you with your target audience. T-shirts are a great way to establish loyal followers who want to wear your band name on their t-shirts and helps promote your product or idea. Custom printed advertising t-shirts will be worn for years. It is one of the best returns on investment advertising projects you can do with in your campaign.