Gender Fluid Grip Me Tension Ring Set. Ultra soft, stretchy tension rings for harder, longer erections. Wide Ring design for added comfort. Dimensions: Small Ring - Inner Diameter: 1.39 inches; Outer Diameter: 1.88 inches. Medium Ring - Inner Diameter: 1.57 inches; Outer Diameter: 2.07 inches. Large Ring - Inner Diameter: 1.77 inches; Outer Diameter: 2.28 inches.