Oxford – these fabrics are created using rougher, more substantial yarns, and hence are inherently more casual. Oxford fabrics are created using a basket weave, where multiple yarns pass over one and other in vertical / horizontal directions. As a more casual fabric, its most natural form is the button down collar.
In colored and patterned Oxford shirts, only the threads running in one direction are dyed, while the others are left white. This gives the fabric its characterized textured appearance. As a result of these coarser yarns, Oxford fabrics are generally more affordable. An Oxford shirt is probably not the right choice for evening wear or a more formal office, but it can make for a great casual / weekend shirt.