Weighted Eye Pillow Eye Mask An eye mask that supports comfortable sleep with a moderate weight. Can be cooled in the refrigerator in summer and warmed in the microwave in winter. - Weight: Approximately 590g - Light Blocking Rate: Approximately 99.99% - Temperature Adjustment Function: HOT・COOL - Feeling: The pleasure of being enveloped Only tried on. Please refrain from purchasing if you are nervous about home storage.