Delving into the Iconic World of the Prada Nylon Collection? The Prada nylon cosmetic bag is an iconic piece from their archival and current collections. It has become part of early 1990's style and emblematic of that era. It was recently reissued in the past couple years due to nostalgia for older styles. The Prada nylon collection is universally cheaper than its leather counterparts, but it is no less fashionable or coveted.