Engineered with a blend of military grade Japanese Cordura and cotton, the 100 Year T Shirt is just as soft as a regular cotton t shirt, but it’s 14x stronger. The challenge for the 100 Year T Shirt was simple – build a t shirt that’s tough enough to outlive you, but comfortable enough for you to want to spend the rest of your life in. The reality of most t shirts is that after a few years they start to break down, then they’re thrown out. The 100 Year T Shirt is different. While it looks like a regular cotton t shirt and feels like a regular cotton t shirt, it’s made from a material so tough it was originally developed for military combat uniforms.