Model Number: Gel eye masks-E009H Brand Name: j, j-bag Key Specifications/Special Features: Characteristics:Materials: PVC/TPU/EVA/nylon taffetaInner material: gelSize: 67*10.5cmWeight: 103gNon-toxic, non-caustic and reusableBag remains soft even in -18°C condition and can be repeatedly used alternatively for hot and coldUsage:For cool compress: put PVC mask into freezer to be refrigerated for 10 minutes before put into fabric eye mask cover cold compress curative should be effective while wearingFor warm compress: place PVC mask into container filled with water, then put container in microwave oven to be heated for 30 seconds for each time, or put into hot water temperature at 60°c for 60 seconds if want to be used continuously, then put mask into fabric eye mask cover to be wearing for heat curative effect.