100% washed cotton is breathable to keep you cool in the summer and dry and warm in the winter. Double stitched seams for quality and durability. Perfectly covers your pillow with enough overhang to not see the pillow or you can tuck back into the pillow for a cleaner look. Easy care - wash in warm water, dry on medium heat, and take out of the dryer as soon as they are done,or just before they are fully dry.