[PapsEdisa]

You can get white and black ones here:

http://www.azharacademy.com/scripts/...?idCategory=81 (UK)
http://www.theislamicestablishment.c...15-amamah.aspx (UK)

You can get coloured ones here:

http://www.barakah.co.uk/gft-turban.html (UK)
http://www.isn1.net/Turban-Cloth-Ama...urbancloth.htm (US)