Although there are products that are more cost-effective, this item has a removabale front harness that can be used for walking your dog as well as a harness for the hind legs (also removable) that can be used with the support strap to assist your dog in necessary trips outside without using the wheels. I particularly like this feature since the removable harness can be put on my dog prior to putting him into the frame. The rear harness also has a formed steel support on the underside which keeps the harness from impeding his ability to urinate--a definite plus for male dogs. The dual adjustments for each wheel provide plenty of flexibility for adjusting height. There is also an under chest adjustable sling to support the dog. This unit has so many more and better features I highly recommend spending the extra money over the cheaper items. You should note also that there are many more that are substantially more expensive.
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