68" diameter. Partial cover. New Graphics. Quick Connect point. Get ready for big fun with the all-new BIG BERTHA! This giant 4 person classic action towable is updated with state of the art features such as a fast quick connect tow system, heavy-duty partial nylon cover, and a heavy-gauge PVC bladder with air cushioned floor. The BIG BERTHA is fully loaded with double webbing foam handles with non slip grip tape. So grab the gang and get ready for big fun with the all-new BIG BERTHA!