ARK’s Preefer Tip is one of the most popular tip attachments for the Z-Vibe. It features a cylindrical design with long ridges along its circumference – perfect for when a “rolling” action is desired. Roll it over the lips, across the tongue, inside the cheeks, etc. This sensory input helps”wake up” the mouth and increase oral awareness for individuals with hyposensitivities. Or, it can help decrease oral defensiveness and food/texture aversions for individuals with hypersensitivities. The Preefer Tip can also be used to work on a variety of other oral motor skills, such as lip and cheek awareness, lip closure, mid-blade tongue elevation, sucking action, and more. Made in the USA , medical grade, FDA compliant No lead, phthalates, PVC, BPA, or latex Each tip measures approximately .4 x .4 x 2.25″ Dishwasher safe To be used with the Z-Vibe or Z-Grabber handle (sold separately) Caution: this therapeutic tool should be used under adult supervision at all times.