Head-harness made of heavy duty 2mm rubber. Gag shown is black dog bone. The gag is removable with 2 snaps at the edge to put a different gag in place. You can chose any gag (see styles and colors here) for this item, and additional gags are $29
Universal will fit most men and women, but may have long excess on the straps for smaller sizes. S/M will fit most women, M/L will fit most average size men and women, and X/L will fit most men. Custom sized is free, just let us know your head (Along eyebrows) and neck (at center) measurement!