- Sponge Bob Inflatable slide has a sliding slope wide enough for 3-4 children at once. The multicolored access ladder detaches from the slide due to Velcro system. The sliding surface has two layers, the wear surface also being caught with Velcro system, so it can change when it wears out. A lot of Sponge Bob cartoon figurines are highlighted in vivid colors. The ‘Sponge Bob’ Inflatable Slide is shaped like a dream castle. In the front side there is a bouncing area, where children can safely jump and even do some stunts.