I've got a 13yr old rescue lurcher who suffers from spondylosis. The drive to our house is sloped and some days when I take her for her walk she really struggles to get up and down this slope. I'd like to be able to help her and I recall seeing a harness type thing with handles on a website ages ago specifically designed to help you to support the dogs weight but I can't remember what they are called. I've tried searching the web but have drawn a blank. Does anyone know the correct name for them and, if so, can you recommend a good one?