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They are one of the three or four main sellers on Amazon providing low cost copy cats of holy trainer like devices and other types of stuff oriented towards this fetish or lifestyle. Below is their listing. The other companies are: Male Briefs, Loewyf, and Yifeng. I don't know if there's any difference. Male Briefs has the highest aggregate rating. You'll also find these brands on other sites.
FYJ Lightweight Premium Medical Grade Resin Male Briefs With Discreet Packing (Large, Black) https://www.amazon.com/dp/B077J6GG2H/ref=cm_sw_r_cp_apa_qRxHAbTKWWVBS
You're correct, this is the exact one I have: https://www.amazon.com/FYJ-Lightweight-Premium-Chastity-Discreet/dp/B077J6GG2H/ref=zg_bs_1243841011_12?_encoding=UTF8&psc=1&refRID=YBJA0ZNMQ023SXA6J6Q1&th=1
I'm just wondering if a cage which does have spacers would solve my problem. Frankly I'm a little in the dark as to what purpose they serve.
My plastic one is an HT knockoff with an integrated lock… My metal one has a padlock and they both have hinged cages and they come up with 3 sizes each so the base shouldn’t be a problem… i want it as tight as possible