Ark's ProPreefer is similar to our favorite probe. This design was requested by many therapists who liked Ark's probe, but who wanted a rounded end instead of the rectangular end found on the original probe. Use it when a "rolling action" is desired. Constructed of sturdy medical grade plastics, it is latex-FREE and the tip won't come off! Use it to stimulate the gums, palate, and tongue through stroking and by applying pressure. The textured surfaces provide tactile awareness and sensation. Material and color are FDA approved. CAUTION: This is NOT a chew toy. It is recommended to be used under adult supervision. Each ProPreefer should only be used for one individual. Check periodically if replacement is necessary due to wear and tear. Sanitize by scrubbing with soap and water. This item is not returnable.