we love how the stroller clasps shut rather than using a zipper to enclose the dog in the carriage. This protects our dog from being able to get out but also from other curious dogs that we are unsure of when we take her to crowded events.   the tires are easy to push because they are air filled.  It is roomy and perfect for a 12 lb. dog who loves looking out the mesh as we walk but it is also roomy enough for a bigger dog.  We use it because we love to walk but our small dog can't walk as far as we do.  She walks alongside the stroller for the last half mile of our walk.  I would give this stroller even more than five stars!!!!!