The tunic shape for a soldiers of the 2nd century B.C. is a simple rectangle of fabric folded into 2 parts with a hole at its center to let out the head. It is then simply sewn on the sides after leaving a free space for the arms.
Another historical method can also be in sewing 2 rectangles of tissue, leaving 3 free spaces for the head and arms.
It stop on the top of the knees up to mid-thights.
Often woven a little longer, it will be stowed on the belt which will form small harmonious folds and create a small natural Pocket much practical under the belt.
The Republican tunic is worn much closer to the body as compared to later Imperial tunics. Economy of tissues, mode? The answer deserves to be investigated further by specialists.
Travel mantel generally accepted as an italic origin and presumably Etruscan, unlike the sagum of Celtic origin. Some also say that it might have a Greek origin. It is made of more or less fine wool according to seasons and presumably still filled with lanolin to protect from rain. It can be wowed or felt made. The lapidary shows clearly that some models with many small wrinkles can be made only with a relatively thin tissue. But others show exactly the opposite. This lead us to think logically that different thickness adapt to different weather conditions. The rare paintings show dark green dark grey color and more commonly a light brown Camel color. Some models are sewn on the front, and others are closed by round buttons and or in the form of sticks.
The dimensions on the illustration are purely indicative and reconstituted after my personal template.
Original tunic from the Roman period.
Notice the sleeveless cut and the red clavis woven directly in the fabric.
This type of tunic, typical of Roman citizens can be either carried by the soldiers or by civilians alike.