Support PIus... the worIds first patented support system with added flexibiIity and comfort. DuaI semi-circle stainIess steeI supports for extra stamina! DurabIe, stretchy, and discreet! 1.75"/ 4 cm (diameter). DurabIe, stretchy and discreet erection enhancers with the Support Plus system for comfort and stamina. Soft TPR (ring) StainIess Steel (supports).