I have been wearing crazy shirts pima cotton line for years. There's just nothing that comes even close in terms of comfort. The silky smooth feel yet breathable fabric makes them wonderful for warm days, no-air-conditioning rooms and, once they get worn out, the most comfortable sleeping shirt you ever had. This particular design is a winner and I get lots of complements on it.
My only warning is that the natural dyes are sensitive to chemicals and prone to bleaching. I use sunscreen and sometimes other face products, including on my neck -- and over time they tend to discolor my crazy shirt around the collar (probably as they migrate down due to sweat). I try to wear my crazy shirts on days when I won't be using them, but be aware this can happen so you don't ruin it.