Though this cuisse is all linen, it is constructed identically to the linen-lined wool cuisse Magnus wears in the funeral effigy picture. The cuisses are gamboised or quilted, consisting of a lining layer, cotton batting, and an outer layer of fabric sandwiched together and quilted vertically. These cuisses are designed with a belt loop at the hip. There is some conjecture that the gamboised cuisse must have tied to the gambeson, but we've had only limited success with this as there is a great amount of stressed at the point of attachment.

In regards to fabric, I'm not aware of any surviving gamboised cuisses. In Arms & Armoury of the Medieval Knight: An Illustrated History of Weaponry in the Middle Ages by David Edge and John Miles Paddock, the authors say on page 60 that "...gamboised cuisses...consisted of cloth, often covered with rich materials such as silk or velvet, and occasionally embroidery."

Though an earlier example, in Companion to Medieval Arms and Armour by David C. Nicolle, it's stated on page 83 that "Padded leggings, kampotouba or simply toubia,...were...common wear for a Byzantine man of the tenth century....This is indicated by the Oneiromancer of Achmet which probably dates from around the tenth century. Here toubia is described as being made of, and padded with, wool and silk."

The Medieval Combat Society has a really nice collection of effigy pictures available on their site. The image to the left shows the knee from the effigy of Robert de Steveton, d. 1307. Here you can clearly see the vertical quilting on the gamboised cuisse.

The image to the right is from the Soldiers at the Holy Sepulchre from the Strasbourg Cathedral, c. 1340-1345. This example again shows the vertical quilting, this time with a decorative scalloped edge.