The fabric can be a very stretchy single knitting, usually light-weight, jersey with one flat side and one piled side. When made with a lightweight yarn, this is the fabric most often used to make T-shirts. Or it can be a double knitted jersey, with less stretch, that creates a heavier fabric of two single jerseys knitted together to leave the two flat sides on the outsides of the fabric, with the piles in the middle. Interlock jersey is sometimes used as a more formal alternative knit to the traditional piqué knit for polo shirts, and is generally the preferred knit for those made from pima cotton. Jersey is considered to be an excellent fabric for draped garments, such as dresses, and women’s tops.