Are Endy Sheets organic? Melissa July 06, 2018 18:17 Updated The Endy Sheets are made from the highest-quality cotton; however, they are not organic. Related articles Where are the sheets made? What is the thread count of the Endy Sheets? Will Endy sheets only fit on an Endy mattress? How should I wash my Endy Sheets? Does the mattress protector sleep hot?