Hi Brooke,
I think I posted before about the Batzi belt that clips onto the Easy Rider. That combo works well, but they are not crash tested. I am planning to buy what I now consider to be the top-of-the-line crash tested seatbelts once I get my tax return. They are made by
Canine Automotive Restraint Equipment , and although they are a little more expensive, they are much better made and worth the $$.