Hello! I'd like to buy a cockring but I'm very conflicted: even if I read the diameter size and compare it with my penis size, I'm still afraid that it will fit me tight and give me some unwanted accidents, I wouldn't want to end up in ER - All about sex! I don't want to sound like a hypochondriac, but I've heard that because of a joke like that, priapism can also come! Please be as honest as possible.... Good morning to you! We confess that this is one of the most common concerns, so we take the opportunity to reassure you and all others who in the past have asked the same question: the cockrings or phallic rings are made of medical grade extra-flexible silicone, just to enlarge if necessary and adhere to the penis enough to hold it without suffocating it. The measurements are usually calibrated on those of an average penis, so if you know you have a penis with a very large diameter, we recommend that you take a tape measure and proceed with the measurements until you find the cockring closer to your size. As for priapism, these are borderline situations perhaps due to a pre-existing disease or exaggeratedly risky forcing, the cockring should be worn with the penis erect and with a little 'lubricant, you understand immediately if it enters or not. The material, however, is not rigid, so you can enlarge it up to 1-1.5 cm in diameter without contraindications! Choose with confidence, then if it does not fit, you can always make the return!