The fabrics currently used for T-shirts are rough as follows:
1. All cotton fabric.
2. CVC fabric.
3. T/C fabric.
4. Polyester fabric.
I think three aspects should be considered for the comfort of wearing:
1. In terms of fabric: cotton is definitely the first choice because the performance of sweat absorption and breathability will be better.
2. The weight of the fabric: This should be considered according to the climate of your place.
3. Fabric treatment: For example, if a polyester fabric is treated with sweat absorption, it will also achieve good sweat absorption, good stiffness, and not easy to deform.