Theragun Large Ball Massage Attachment The Large Ball Attachment is specifically designed with greater surface area & the low impact level needed for treatment of large muscle groups like the glutes, hamstrings, & quads. FEATURES AT A GLANCE made from 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