The ARk Probe has a flat biting surface with a nubby rubber texture. It has a rectangular tip that is bumpy on one side, striated on the other, and smooth along the edges. These textured surfaces provide tactile input, sensory awareness, and sensation. Use this Probe to work on pre-feeding goals, provide sensory and oral stimulation or to teaching chewing. The Probe is constructed of medical grade materials that are FDA compliant and contain no lead, phthalates, PVC, BPA, or latex.