Every sports team has a loyal following, and every sports team also has a rival team they compete against. Rival teams will often pit close schools against each other. Fans show their love for their team in many ways. They buy tshirts, wear rivalry tees, sports jerseys, gear, watch the games, go to the games, record the games, make fantasy leagues, and even more.
Lightweight tees are an important option to offer fans as a way to show their love for their team. Not every fan is going to want to purchase an expensive Jersey, sweatshirt, et cetera. Tshirts are a great, cheap way for people to indicate what side they are on. Even kids get in on the action. I remember one of my favorite nightgowns growing up was an oversized Buffalo Bills tshirt that I had gotten from my dad.
University rivalry tees are popular on school campuses and it is almost impossible to walk anywhere in between class times without seeing someone wearing one. Rivalry tees are especially popular because they encourage fans to think in an us versus them mentality, which makes them feel closer and more oriented to their team of choice. Graphic sports tees are popular among college kids who often shun clothing that is not comfortable enough to basically sleep in. Giving a shirt as a gift is usually a good option for a college aged son or daughter.
It is easy to think of sports as being something only boys and men appreciate, but many women get very into supporting their favorite teams, especially in college when there are a range of popular sports students can support, including rugby, swimming, soccer, the traditional football, and on some campuses, even quidditch! As any quidditch player will probably tell you, rivalry tees are often a popular choice and way of reminding people of the sometimes unknown popularity of the game.