Ok the ones I own....
1) latex inflatable plug
This one is easy to insert as you can squeeze nearly all the air out, fold it a bit and slide it in..
Then the more pumps you give it the bigger it gets... it will not come out by accident when pumped up hard!!
The material is latex rubber.
2) Doc Johnson classic Medium
This was my first 'solid' plug. Definitely glad I went for this one completely bypassing the small one.
Relatively easy in if you relax a take a few minutes to slide it home.
It's not a round plug at its widest, much more ovalled.
Once in it sits quite comfortably but can eject itself quite easily if standing. The longer it's in the easier it is to keep it in without too much clenching/concentrating.
Length: 13.97cm (5.5 Inches)
Insertable: 10.6cm (4.2 Inches)
Circumference: 13.3cm (5.25 Inches)
Diameter: 4.2cm (1.7 Inches)
The material is slick and smooth
3) Rocks off Rude boy
This was my first 'P Spot' insertable.
Disappointingly thin but the vibes are fun... no hope of it staying in place without support.
The material has a sort of dry rough rubber feel to it, but not an issue once lived.
4) Rocks off Big boy
Significantly larger than the rude boy, much more a triple ball stack. First 2 balls go in ok for me, it can instantly provide some dripping up front. The angles of the toy mean it goes much more in and forwards rather than up like a standard plug. I find this angle combined with the 3rd and largest ball makes it difficult to fully insert as it almost feels as I'm reaching a depth limit into my pubic area? Again the vibe patterns are fun.
The material feels very firm and sort of dry and bumpy... an ultra slick toy this isn't.
4) Doc Johnson Classic Large
Only recently got this one and only had a very quick 'rushed' test.
The large is much much bigger than the medium in width, but similar in length. It almost feels as if it's twice the size, but realistically it's probably only 20% wider.
Didn't manage to insert it fully but fairly sure with a more steady session I will succeed
The material feels slick and smooth before any lube is added.
Length: 15.24cm (6 Inches)
Insertable: 12.7cm (5 Inches)
Circumference: 18.4cm (7.25 Inches)
Diameter: 5.8cm (2.28 Inches)
The material is slick and smooth