Rayon is considered semi-synthetic. The raw ingredient, usually wood pulp, is natural, but the processes used to refine it stop it from being classified as such. It’s the closest replica to silk, and very soft. Mostly used in dresses and blouses, it's also found in loose-fitting sportswear, like tank tops and t-shirts.
American Apparel TR401 - Unisex Triblend Short-Sleeve Track T-Shirt
Next Level 6071 - Men's Triblend Long-Sleeve Crew
Champion 0349TL - Women's Allegro Keyhole Tank
Bella+Canvas 3413C - Unisex Triblend Short-Sleeve T-Shirt
Bella+Canvas 8816 - Ladies Slouchy T-Shirt
Champion 8220BL - Women's Ignite Short
Threadfast 382R - Unisex Impact Raglan T-Shirt
Bella+Canvas 3413Y - Youth Triblend Short-Sleeve T-Shirt