ENHANCE - Increase Stamina & Enjoy Harder ErectionsSTRENGTH - Strong. Tear-Resistant ElastomerTHICKER - 20% Thicker Than Regular Donut Rings. for Even Fuller EffectPEACE OF MIND - Made from TPE. Contains No Fragrances. Phthalates. Paraffins. or LatexSIZE - 0.5 Inch Thick x 0.7 Inch Inner Diameter x 1.67 Inch Outer Diameter (Each Ring)