They're shiny, they're sort of silky, they're all cotton...and they were free, since I got them for review.Thanks to the Wayfair beddingsets.com, M and I were able to toss a tattered sheet set to the rag bin and luxuriate between this 400 Thread Count Stripe Sheet Set that fits our queen-sized mattress snuggly but comfortably and makes us feel as though we've slept ourselves from bumpkin-hood to sleek, ivory-colored cosmopolitan living, right here in the comfort of our country home.Unbeknownst though it would be to astute readers of the sheets' online description, the set includes two pillowcases, of equal size, that now encase our pillows. The fitted sheet's elastic band is sharply formed to grip and hold, and the fine thread count of 400 guarantees us many nights of Pima-inspired multiculturality that is even close to Egyptian revolution.[...]