Live long and prosper with our Vulcan Stiff Cotton Denim Twill! So dark it's almost black, this navy blue denim is structural and stiff while retaining denim's well-loved, semi-coarse texture. Utilize the unique drape by crafting avant-garde dresses, boxy overalls, or wide-leg jeans to hop on the Y2K trend. Opaque, a lining is not necessary for most projects.