This is a simple yet useful accessory for the gentleman's wardrobe. These cravats are made from black silk, black polished cotton, or cotton check and feature a band that buttons around the collar (adjust the button to adjust fit) and a tie it yourself bow that can be attached to the band. These will result in the large bow cravat that is often seen in many images from the 1850s and 1860s. To utilize this cravat, first tie the bow that you want, then feed the neck band piece through the back of the knot of the bow and button around the neck.
