we can not thank enough to Stuart @ Walkin' wheels of his professionalism as well as his patience and prompt support from Day 1 after we received the quad wheels for Ted- our baby, a German Shepard. Stuart has assisted to our needs, our inquiry, our concern and just about every detail that we were seeking into, patiently, and kindly !, The product is also amazing with well design and i it does it's works for DM issue that Ted has. It was devastated see Ted went off, and we are lucky to find the Quad Walkin' wheels for him be able to have his ride on the wheels, we feel Ted is looking forward to be able to get on his wheels everyday ! it is so important for us that he is happy, Ted is family, and Walin' wheels made it works for him. thank you Stuart you are the best ! and thank you Walkin' Wheels !