Gamling has an under tunic of brown ultrasuede which is based on the single photo I have of the
character out of his armor, during the toasting scene after the battle of Helm's Deep.
Both Theoden and Gamling also have sashes of mulberry tussah silk that they wear with their armor. Gamling
wears his on top of his mail coat, under his belt, as do all the Royal Guard of Rohan. The King wears his
on top of his mail skirt, under his cuirass. Presumably to protect the skirt from wearing against the
metal of the breastplate. This can be seen in photos of the costume taken from the back during costume