The Kilt is a length of woven wool that is permanently pleated except for sections at each end and wrapped around the wearer's waist in such a way that the pleats are massed at the wearer's back and the flat, un-pleated ends overlap to form a double layer at his front.
Any fabric may be used to make a kilt, however traditionally they were made out of wool.
It is not so much the "kilt" but rather the "tartan" form which the kilt is made. For an visual answer to this question see the related link I have made below.
Wool
Scotland
A kilt should be dry cleaned. Most are made of wool, and so should be treated accordingly.
Kilt!
'Kilt' is le kilt.'He wears a kilt,' is Il porte un kilt.
Kilt
Since the 19th century, the kilt has become associated with the wider Scottish and Gaelic cultures. Kilts are often made of a woolen cloth in a tartan pattern. Usually worn at formal events, competitors also wear this Scottish outfit at the Highland Games.
Irish kilts can be made out of a large number of different fabrics of your choice. The traditional Irish Kilt, however, is made from a fabric known as tartan. There are several different types of authentic Irish tartan that can be chosen from.
Kilt is the word you are probably looking for. Though it should be mentioned all kilts are not tartan
One can purchase a kilt belt online on websites, such as Utilkilts, Stillwater Kilts and Your Kilt. A kilt belt can have different decorations and designs.