New Here - Miracle Belt Anyone???

Hi, I have a 2 year old son that has just recently started therapy for sensory issues, he sees an OT and a speech therapist, he is a sensory seeker and can get pretty radical, spinning, jumping, throwing himself around, etc. In my research I came across a product called The Miracle Belt, basically a weighted belt for him to wear. I went ahead and ordered it because they have a 30 day money back guarantee but was wondering if any of you have heard about it or have any experience with it, my therapists had never heard of it before. Thanks!