For the most precise, ideally customized fit each and every time you need or want a little extra firmness and longevity, the Perfect Fit Erection ring goes the extra mile to make sure you're comfortable and more than ready for action. This unique ring offers up 13 sizes, all of which are incredibly simple to adjust via an incremental locking system that stays secure, even when lube is added to the mix. The construction is ultra hardy and nice and flexible, letting you strap it on in a snap (literally) and release yourself just as quickly. For extra firmness and a bigger, thicker look and feel, simply loop the Ring over the base of the penis, or over the base of the penis and under the testicles, depending on how you choose to use, and snap into place. Made from phthalate free elastomer and plastic, the Perfect Fit is safe, hygienic and made to last. Compatible with both water and silicone based lubricants.