I was surprised how well this worked. The cable is long enough to use in bed and it gets warm enough. Not as hot as a real heating pad, but that's probably healthier for your eyes anyway. Works perfectly for migraines.
Very good product. The temperature is perfect ( juts warm) and it arrived fast to Canada. Ordered it in 1/1 and received it on 1/28. And it stays on face. Perfect! Highly recommended