our brand new and high quality ice mask is to be Placed inside the refrigerator, after pre-cooled 30 minutes, you can wear the eye mask, usually worn for 5-10 minutes, according to individual symptoms can be extended, without any side effects but use at own risk Heat: 60 into the warm water in about 2 minutes. Functions: lessen eyestrain Reduce the dark under-eye circles promote blood circulation Size: Approx. 20*6.9cm/7.87*2.72in Package included: 1 X eye mask