Steam Heat Eye Masks are light weighted and easy to carry. They are perfect for all kinds of people, including office stuff,students,businessman etc. You can have a eye SPA at any time: at bedtime, leisure time, noontime snooze, traveling on plane or train, rest time in office.Warm steam eye masks are made of soft medical non-woven fabric.Self warming. No need microwave or electric plug. Just open it and put the mask on your eyes. Release steam with natural herbs extract relieves anxiety.