In addition, it acknowledges cotton poplin, broadcloth, rayon, or silk as appropriate. The EHWBDU's components are made with 50/50 ripstop nylon and cotton poplin blend. Materials vary from silk embroidery, gold braid, gold thread, linen, poplin and cotton. Broadcloth, poplin and end-on-end are variations of the plain weave. The original heavyweight nylon-cotton blend was changed to a lighter-weight nylon-cotton poplin material. Poplin is now made with wool, cotton, silk, rayon, polyester or a mixture of these. Before 1980 Ichalkaranji was known for cotton poplin, dhoti, and cotton saris. Today the kanzu is made from silk, cotton, poplin, or linen. Poplin traditionally consisted of a silk warp with a weft of worsted yarn. Poplin was also a popular upholstery fabric. Both of these were essentially wool versions of the 1941 pattern poplin field jacket. In 2007 threeASFOUR collaborated with Gap on a limited edition of white poplin shirts. Shamrocks also appeared on decorative items such as glass, china, jewellery, poplin and Irish lace. The silk and poplin industries grew successfully in the first half of the 18th century. He studied with John Clayton, Paul Ellison, Tom Knific, and Stan Poplin.