Two inflatable rear wheels and two EVA universal front wheels for a smooth ride. Can be used on different ground conditions; Reflectors and a red flag for visibility in traffic and at night; Mesh windows at the front, top and sides keep the area ventilated; Easy to fold for storage; Weather-resistant material keeps your pet from getting wet; Maximum load 40kg, assembly required; An included safety leash to connect to your own; Can be used as a trailer for your bike or a trolley for walks; An open top and zippered mesh back door for easy access; Pawhut Dog Bike Trailer Pet Stroller | Red | Living Social