Wash your hands. Wash the thermal ring with a gentle soap and lukewarm water, the rinse it and tap it dry with a clean towel or soft cloth. Insert the penis into the thermal ring. Then, gently slide the scrotal skin until it is completely inserted into the ring and the ring is in contact with the pubis (the area just above the penis) and the perineum (the area between your anus and scrotum). Lacking space, the testes will then naturally move up into the inguinal sac, at the root of the penis, where they will enter a heating phase.
It is absolutely necessary to check that the testicles are in the inguinal sac with a light palpation. That is, that they are above the thermal ring.
The qualities of the platinum-catalysed silicone, certified biocompatible (ISO 10993-10 Skin Safe), the shape of the thermal ring and the structure of its internal side create a push-up effect that allows the testes to be held upwards so they cannot settle back down into the scrotum. You can wear any standard underwear with the ring on.
Wash your hands.
The device is correctly placed if the testes are held up as shown on the illustration.