This is an awesome stroller for my 75 pound senior dog. Rolls smoothly with her in or out of it. There's only 2 small issues with the design: 1) When the top is open, there is nothing to hold it open (it can close on my dog when she's entering or exiting the stroller. Plus she likes to ride with the top up - I easily fixed the issue with a yarn loop over the metal tray connector and the front closure snap when it's open). 2) The 2 straps included are attached at the Velcro closure on the bottom of the stroller (one small tug with my hand and you hear the Velcro start to separate - I just don't use them).