Instruct: Classify a review into positive or negative sentiment.
Query: Excellent relief from pain

I have never liked taking painkillers so, when I have a headache or migraine, I seek more natural remedies to get through it. Your eye mask is a gift from the universe! I heat it either for 10 minutes in a warm pot of water or microwave it for 15 seconds, then apply it to my head and ears, neck, back, wherever the pain is coming from, and feel instant relief. I can feel the knots and tension beneath my skin just melting away. Thank you so much for this wonderful product. I ordered three so I could give them as gifts.