You do give an inside diameter when you order. If the end of the test cage is "too large" the cage is too long. If the head of his cock is sitting in the end it won't be too big at the end.
Device Lubricants
Re: Device Lubricants
Wife, Girlfriend & KeyHolder
My boys are Wearing: Jail Bird (cm) Steelheart (a)
Owned Devices: MM Jail Bird (x2), MM Spyder, MM Locking Double Cockring, Steelworxx Revenge
Click here for Our blog & Podcast
My boys are Wearing: Jail Bird (cm) Steelheart (a)
Owned Devices: MM Jail Bird (x2), MM Spyder, MM Locking Double Cockring, Steelworxx Revenge
Click here for Our blog & Podcast
- KittensBoyToy
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Re: Device Lubricants
The end of the cage I am wearing is larger in diameter than the rings for the shaft. The head on my penis is about the same diameter as the shaft so the diameter of that part is too big. Flaccid I am longer than the cage so I fill it too the end.
Kitten's Boy Toy
I'm Kitten's property and She keeps Her property secure in a Jail Bird!
I'm Kitten's property and She keeps Her property secure in a Jail Bird!
Re: Device Lubricants
Keep in mind that some "water based" lubricant contain glycerin or other form of yeast/bacteria food 

Re: Device Lubricants
I have for years now been Johnson's Baby Oil Gel.
I use a little to assist getting in.. and then a little as and when needed. Usually underside of scrotum it feels like its pinching or rubbing.
Not messy ..water soluble.
Does all I ask of it
All I ask it taty they keep selling it. There used to be 2 or 3 diffeent ones and they used to have a lot of c#shelf space in 'Boots'... now they only have a small amout on display and its the camomile one. No strong odour though.
I use a little to assist getting in.. and then a little as and when needed. Usually underside of scrotum it feels like its pinching or rubbing.
Not messy ..water soluble.
Does all I ask of it
All I ask it taty they keep selling it. There used to be 2 or 3 diffeent ones and they used to have a lot of c#shelf space in 'Boots'... now they only have a small amout on display and its the camomile one. No strong odour though.