The Marketing Power of a T-shirt. We provide alternative and cost-efficient advertising for your business by using the T-Shirt as one of your long term marketing channels. If you haven't got any T-shirt, cap or jacket with your brand's logo, you're missing out on a powerful and affordable marketing opportunity. Proven that T-shirt is the best method as it is unlimited marketing. Consumers can wear custom T-shirts for years, which gives your business the opportunity to effectively, spread your marketing messages and social campaigns for the long term.