The Sportsheets Merge Collection RUBBER O RINGS 4-PACK are firm yet stretchy, latex-free rings in sizes 1.25", 1.5", 1.75", and 2" - giving you choices to personalize the ideal size and tightness that work best for your body. Mix and match sizes and vibrant colors to stabilize the base of dildos, wear on your penis and testicles to enhance stamina, or to simply brighten up your strap-on play.