Exacme 2in1 Bicycle Bike Dog Cat Pet Trailer Carrier Pet Stroller 0026RB Front wheel can be changed, can be used as a pet stroller or can be used as a bike trailer. Meshed windows allow for maximum air flow.Inside dimension 21.5" (L) x 15.5" (W) x 20" (H). Clear plastic cover to refrain rain and wind. Loading capacity: 88lbs Wide wheel base with 12" air-filled tires provides stable ride Includes universal bicycle hitch -- work with most model of bikes