They appear to be regular sex shop silicone
cock rings. You can slip them on before or after you use the [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98 ]
Bathmate[/words].
Cock rings are intended to retain the engorgement resulting from the [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98 ]
Bathmate[/words] session. The description says you can also use them to improve your erection even when not using the [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98 ]
Bathmate[/words]. They come with tiny vibrators attached to improve stimulation.
You can probably get similar products from reliable sex shops at a lower price.