I have used this for about week now and have overall been pretty happy with it. 1. So far I have not experienced a `burnt or `chemical smell as some others talk about. Unlike the The Happy Company Cozy Neckwrap, ChocolateI have which has a definite burnt smell
2. Stays warm for 20-30 minutesmy physical therapist recommends this as a good amount of time for applying heat to any area
3. Nice weight. It feels great if I lay down on my stomach and place this along my spine. It also stays in place if I place it flat on the bed and lay down on it.
4. The strap piece is so so. With the weight it really does not stay put well using the strap to hold it in place along the waist. I do however find the strap is a great positioning aid when Im resting against it setting up.
5. The heat is moist and feels great both the moistness and the heat decrease with time but the first 20 to 30 minutes is great
6. Great size. This works great up and down along my spine or across my shoulder. Many pads like this are too small to really cover the area where I want heat