This tunic was thought to have been made between 1100-1399 C.E. which covers the Fatimid and Ayyubid rulers of Egypt. The shirt is embroidered linen. Unfortunately there is no other information on the Victoria & Albert Museum website. The item is currently not being shown. Scrolling in it is possible to see that the motifs look like fish and “lollywrappers”. Both of those motifs look to be done in pattern darning with a little running stitch highlighting the seams.
The construction of the shirt is the same as the shirt previously mentioned in the post “An Egyptian Child’s tunic from the Mamluk Period”. That shirt can be found in the Ashmolean Museum.