This is something that only we, a materials manufacturer, can do.
It has such a high density and firmness that some people may feel it is too stiff when they pick it up. However, the texture improves over time, making it an addictive material that you won't be able to stop wearing.
The fabric density is maximized. It is processed in two stages: first by stuffing it with woven fabric, and then by stuffing it in the fabric process.
For good quality and great deals on shirts, head to Uniqlo. For over-the-top quality, head to Shuttle Notes.