What I do want to share is my experience to save as many headaches as possible. Slippery feeling and I have twisted my ankles. I wouldnt push on it at all because its not sturdy enough to handle it. It is super easy to use and is comfy to wear for a long time. For the price, Im not going to ding it a star for a lack of timer or auto shut off. Favorite muscle tank! Only moderately happy with this purchase. It looks so much nicer than a velcro shoe! My only confusion was in the directions: it mentioned a USB plug attachment (which would have been very nice to have as an option included in the box) but it does not appear to come with the set. It should be noted that I never got around to testing sound quality or volume.