My vest is over 10 years old, the timer doesn't work, and it is imposssssible to move, its about 50 pounds. Last year the physical therapist said I could get a new smaller one for when I go to college, but now she says insurance won't pay for it only replace the model I have. WHICH IS STUPID. Does any one know how I could get around this? Or get one second hand? We did see one on ebay for 400 but i don't know how reliable that is. Is there any way to rent a vest if I can't get a new one?