This is the best heat pad I have ever purchased and believe me, having had fibromyalgia for 14 years I have tried nearly everyone available, The heat is instant, consistent, extremely warm and soothing a real triumph. The actual pad is large enough to cover both shoulders and neck comfortably, larger than most other makes and models. For anyone experiencing pain, especially if body is sore to touch this model provides the ultimate relief,the heat pad is covered in a thick, quality fleece giving ..