Quilted Mesh Reversible Pillow Cover (Standard) High quality, pillow cover is two specialty covers in one! One side is premium 300 thread count 100% quilted cotton. It offers a warm and cozy surface. Turn cover inside out and entire surface is a cool "3D Mesh" fabric that slightly raises your head over the pillow surface, allowing air to circulate. The entire cover is zippered for full enclosure and features piping in Contour Blue. Transform your favorite pillow "core" into a high end pillow that works all year round.