Chastity device reviews discussion

Hi there, I’m looking for the actual sizing of HT2 rings. I recently received an HT with a 40mm ring, but it started feeling too loose after some time. When I measured my true size, the inner diameter appeared to fall somewhere between 40mm and 45mm. There’s also a number on the inside bottom surface under the lock. My ring has the number “1” on it. I’m trying to determine whether I actually have the 40mm version or if I should go ahead and order the smaller 36mm one. Thanks for any help.