Slide-o-Mix Rapid Comfort is an easy to use, one step trombone slide lubricant. It is designed for the trombonist who wants the features of Slide-O-Mix, but in a quicker and easier application. Rapid Comfort can be used when there is limited time for application. Apply it, spread it, and you’re ready to go! Adding water using a water sprayer enhances the gliding qualities of this product even further.