Hemp clothing does not necessarily have a tropical leaf printed on the chest. Instead, it is fabric made from the fibers of the hemp plant, typically of a species that has very little in the way of psychoactive substances. While technically related to weed, fiber hemp is grown just for the fiber with the leaves being suitable for composting. It is considered green because hemp plants are lighter on the land than cotton while the fibers are incredibly strong.
In fact, hemp was grown to make rope until synthetic fibers were invented. It is still imported to make blue jeans, where it is mixed with cotton threads. A fabric made entirely of hemp feels heavier but also much cooler because of the permeability of the fabric. It lasts way longer than cotton and actually feels much softer after it has been broken. Visit this shop to see how attractive it can be.