This Roman tunic was worn in the late 2nd century AD, called tunica manicata, with long narrow sleeves.
The material is cotton with fine blue embroidery. It was usually worn with a belt (wear without belt was considered as bad behaviour).
The white material may well be dyed if you prefer another colour.
Length: 110 cm / 43.3"
Sleeve length (measured from shoulder): 62 cm / 24.4"
Chest: 130 cm / 51.1".
As these garments are not machine-made the stated sizes may vary. Thank you for your understanding.