works well, penetrating heat but heavy

This does just what I wanted. It infuses deep heat all around my neck and shoulders. Very relaxing and is helping with my neck tension. I was surprised at how heavy it is - about 2 pounds as the specs say. That's OK - it actually helps it stay in place and keep the heat in. But it's not something you'll take with you to use elsewhere. It also takes a bit of time to get warm. they make a big point not to go over 90 seconds. But it does not get warm in 90 seconds. I need to go about 150 seconds.

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