Spread, adjustable pressure. The anatomical peno-scrotal design loops around the base and behind the testicles so pressure is spread evenly, and the hook-and-latch lets you set the tension rather than forcing a fixed size. The rings do not restrict ejaculation.
Soft materials. All three are medical-grade elastomer, phthalate- and latex-free, with nothing hard or rigid. Use only water- or silicone-based lubricants, never natural oils. FirmTech research on the safety of a smart ring worn overnight was presented at AUA 2024 and ISSM; see FirmTech’s clinical studies.