[originaltext] For many years, T-shirts were simple short-sleeved undershirts

For many years, T-shirts were simple short-sleeved undershirts / for men and boys. Since they were worn under shirts, they were generally not seen.
   Today the T-shirt has become fashionable. It can be seen everywhere and on everyone. Women and little children wear T-shirts as do teenagers, university students, and men from all walks of life. T-shirts are worn on playground, at the beach or in town. They can also be worn for work. T-shirts remain relatively inexpensive and longwearing, as well as easy to care for.
   Although T-shirts are now available / in a wide variety of bright materials and styles, the most popular kind is the traditional cotton T-shirts / with a slogan or picture printed on the front. A T-shirt may bear a single word, a popular phrase, pictures of popular singers, or an advertisement. As T-shirts are becoming more and more popular, new designs are coming up all the time.