My apologies if this has already been touched on, but I am wondering if any of you can shed some light into the differences in the weight of a cotton tee that is described as 30s weight vs 40s or higher. Thanks!
The 30 single, etc. refers to the thread weight that is used. The higher the thread weight number, the finer, softer, and thinner the shirt. When a higher thread weight number is used, the thread is finer and a tighter weave can be achieved. This gives the shirt using a higher thread weight number a softer, finer feel. Therefore, a 50 single shirt would be thinner and lighter than a 30 single shirt than an 18 single shirt, etc. For men, a 30/s shirt is considered to be a premium quality, fine, soft shirt. Sometimes, manufacturers use 40/s for men but it's less common-- the finer the shirt, the more lumps and bumps the shirt shows off in its drape. And that just doesn't look all that flattering on a man's body. For women, a 30/s or 40/s is very common for the premium shirt manufacturers to use.
The 30 single, etc. refers to the thread weight that is used. The higher the thread weight number, the finer, softer, and thinner the shirt. When a higher thread weight number is used, the thread is finer and a tighter weave can be achieved. This gives the shirt using a higher thread weight number a softer, finer feel. Therefore, a 50 single shirt would be thinner and lighter than a 30 single shirt than an 18 single shirt, etc. For men, a 30/s shirt is considered to be a premium quality, fine, soft shirt. Sometimes, manufacturers use 40/s for men but it's less common-- the finer the shirt, the more lumps and bumps the shirt shows off in its drape. And that just doesn't look all that flattering on a man's body. For women, a 30/s or 40/s is very common for the premium shirt manufacturers to use.
Thanks for the awesome answer!
So, if you wanted a thicker, heavier weight t-shirt that was still very soft, would that be an 18s (or maybe lower)?
The weight of cotton (30s vs 40s and 50s) 
