Inflatable Dildo - 4 Sizes

I'm a relative beginner as a bottom & bought one of these to use as a training device.

The stated size fort the Large one that I bought is 1.6" diameter or 5" in circumference deflated but the one that I received measured at 5.14" deflated; a minor difference.

There were no inflated measurements provided by Mr. S. So, this is what I came up with;

4 pumps: 5 1/4"
8 pumps: 5 3/4'
8 pumps: 6"
12 pumps: 6 1/4"
16 pumps: 6 3/4"
20 pumps: 7 1/4"
24 pumps 7 1/2"
28 pumps 8"
32 pumps 8 1/2"
36 pumps 9"
40 pumps 9 1/2"
44 pumps 10"

All measurements are approximate ^ were taken in "open air" & not under compression .

The sizes, when used internally, will be significantly different because under compression which will force the air will flow to the bottom of the inflatable toy decreasing the size the the middle/top & increasing it significantly at the bottom.

For example, when the toy is inflated to 10" in diameter, just compressing the middle & top with my hands will reduce the circumference at the middle/ top to 7 1/2" & to 11" at the bottom.

If you then squeeze the toy at the bottom you can force air back to the middle & top to increase its size there but you have to continue to squeeze the toy at the bottom to maintain the desired size there.

This isn't a complaint just a fact & its not a problem for me because I don't want the max size at the middle/top to exceed 7 1/2-8 internally anyway but, if you need/want more than that, you should probably buy a different inflatable toy.

The toy has a very smooth surface, so there is little to no friction when used for thrusting but, because of the thin latex used, I don't think it would hold up long to such use.

My main purpose is to train my my sphincter to accept larger sized dildos & butt plugs by gradually increasing its size & to hold it at the larger sizes without abusing my bottom & this is very good tool for this purpose.

The latex surface of the toy also gets sticky after washing. I dusted it with talcum powder to get rid of the stickiness but the powder obviously has to be washed off before the next use.

Bottom line: This inflatable penis is a cheap & simple device to use if you want to train yourself or someone else to accept things in their butt up to around 7 1/2-8" but, if you (or your buddy) are more advanced than that, you'll probably need something that will expand larger.