ZURENI Gel Eye Mask Cooling Relaxing Cold Compress Beads Pad for Dark Circles, Dry, Swollen, Puffy Eyes, Patches, Sleeping Ice Cool Pack Zureni Gel Eye Mask is a soothing sleep mask that lets you sleep peacefully by relaxing your tired eyes. It is ideal for relieving swollen, puffy & itchy eyes, dark circles, undereye marks, etc., and is suitable for both hot and cold therapy. With hook and loop fastener straps, it can fit every head size properly and is convenient for both men and women. How to Use? Cold Therapy ~ Refrigerate for 2-3 hours or freeze for 1 hour. Heat Therapy ~ Heat in microwave for 10 seconds. Use As Hot Compress For: Puffy eyes, dry eyes, dark circles, fatigue, and other eye issues. Use As A Cold Compress For: Fever, sinus pressure, headache, allergies, blepharitis & wrinkle.