Stainless shirts are made of pure cotton.*
Cotton is grown, cared of and harvested.
Cotton is ginned, combed and spun to threads.
Fabric is weaved respectively knitted and dyed.
Then it is moved to the sewing manufacture.
*Only in the collar of the raglan shirts is some Elasthan. The pattern doesn‘t allow differently.
To cut the fabric it is put in many layers. That has to be done with great care, so the straight grain, sort of the direction of the fabric, stays straight. Otherwise the shirt becomes twisted after a few times washing.
Then the pattern is put on the fabric.
The cutting is done with electric knifes.
Four different sewing machines are needed to make one shirt. One to sew the different parts on each other, one for the hem, one for the collar, and one only to close the seam at the collar.
Because T-Shirt Jersey is elastic it is difficult to sew. You need special machines and craftsmanship.
Then it is trimmed, controlled, ironed, packed, exported, shipped, and imported.
All that only for a shirt.