The Neuro Ball is a versatile 3-in-1 tool that can be used as a ball or split into two domes for sensory stimulation and trigger point release. It features a Naboso texture for simultaneous release and sensory input and includes a firm Micro Round inside for detailed work on small muscles in the feet and hands. The Neuro Ball measures 2.6 inches in diameter and weighs 5.6 ounces.