This mask is an ideal way to de-stress after a long day at work. It can be used also as an ice pack to relieve the user of mild headache or fever. So you and your partner are ready for a naughty night! To use cold: Put the mask in refrigerator for about 60 minutes. Then gently place on closed eyes. Sit back & relax. To use warm: Warm the mask in hot water until desired temperature is reached. Test temperature before using.