Specifically designed to mimic an actual human thumb, the Thumb attachment is perfect for trigger point therapy and use on the lower back. Use the Thumb anywhere you might have used an actual thumb and get the treatment you need without needing to leave the comfort of home. Made of comfortable closed-cell PU foam. Easy to clean for a hygienic experience. Won’t absorb sweat, lotions, or oils. Compatible with PRO, Elite, Prime, mini, G3PRO, G3.