Instapump Fury Sandal Zip Following numerous requests, the upper has been updated with a ZIP type! The Instapump Fury's voluminous sole design makes a statement in the summer street scene. By adopting a lightweight and airy textile upper, it also offers ease of wear, and the deliberately exposed air bladder creates a design that evokes the future. This is a display item, so there is an "x" mark on the box and inner tag.