VEVOR Dog Bike Trailer, Supports up to 100 lbs, 2-in-1 Pet Stroller Cart Bicycle Carrier, Easy Folding Cart Frame with Quick Release Wheels, Universal Bicycle Coupler, Reflectors, Flag, Blue/Black

Highly recommend this dog stroller/trailer. We use it as a stroller. Today was the first time we used it for a walk. It rolls easily. Wasn't a problem, pushing it, pulling it, turning it. Easy to get the dog habituated to it. There are some training instructions included in the use and assembly instructions that come with it. All four sides have mesh so she could see me when we were walking. The dog did not get overheated inside of it despite the outside of the stroller/trailer being dark colored. Have not taken it on anything but pavement yet. Assembly was not difficult however more of it could be preassembled i.e. the brakes, the reflectors, the holders for the push handle could come already pre-attached. Some might like for it to have a drink holder on the push handle. Assembled it inside. It did not fit through the doorways to get it outside. It was not difficult to remedy that. Took the stroller handle off and dropped the bar that goes between the top of the two sides and is held in place by a pin. Piece of cake. Then it collapsed down to a size and weight that were manageable to carry it outside and down some stairs. Very happy with it so far.