Have you ever thought about when and where the T-shirts were found?​
One theory is that the dock workers who unloaded tea in Annapolis, Maryland in the 17th century wore these short-sleeved shirts, and people abbreviated "Tea" as "T", so the shirts were called T-Shirts.​
The other theory is that the sleeves of the shirts and the upper body form a "T" shape, so the name of the T-shirts is derived from this.​
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The raw materials used in T-shirts are very wide, generally cotton, hemp, wool, silk, chemical fiber, and their blended fabrics. Common T-shirts are made of pure cotton, linen, or linen-cotton blends, which have the advantages of breathability, softness, comfort, coolness, sweat absorption, and heat dissipation.​