These are very large pads that give an amazing butt (or shoulder) massage. This pack includes both the small and the extended. Place with the curved edge on the very outside of the butt cheek and the wavy edge toward the crack to cover most of the outside surface of each cheek. An escalating pulse rhythm works best. Enjoy!
Note: these have a very large surface area and will take much more power than normal much smaller pads. Keep turning the power up until desired sensation is achieved, or switch to a stronger unit if necessary.