Features: Breathable & Supportive Sleep Surface: The cooling sleeper pillow case uses advanced fabrics on both sides to promote air circulation. This design helps minimize heat buildup and provides a comfortable sleeping surface that supports the contour of your cut-out pillow for improved sleep quality. Thoughtful Design for Enhanced Sleep: This side sleeper pillow case features a precise cut-out shape and smooth fabrics that work together to reduce friction and disturbance. It helps maintain your pillow's custom support and alignment, contributing to a more undisturbed and comfortable rest. Specifications: Material: 370G ice silk fabric Color: the cooling side is dark gray, and the soft side is light gray Size: queen size: 18 x 28 inches/ 46 x 71 cm Package includes: 1 x Cooling cut out side pillowcase Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays