To r363b:
Overall length of the RD-2 inserts are 8 inches. Nice fit for an average 6" guy
I estimate the inside diameter ~1.3-1.5 inches, but only 0.8 inches at the tapered entrance.
Inside ribbing is minimal, lends itself to pleasurable extended daily journeys.
All my inserts are from 2012-2014. Checking their website, they have a new model, very similar to these.
I do trim the inserts at the entrance from the extra flanges and removed the plug the other end, making them open ended. The vacuum created too much friction and hard to start up. Use the TB bag for protection
RD people were nice to me and made me a few different density inserts on special order. but their standard is the best for me.
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The new TB insert is not useful for me. It is too stiff, I could not enter into it. If I could, it would choke me without a neck-tie.
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Overall length of the pink pouch is ~8 inches. Starting a year ago I had the size of the pouch reduced as shown on the picture. It is a better fit and it is easier to insert into the Babes. Please, experiment. Understand, all my Babes are modified by me, the vag. is moved up by 2" for easy mating in a missionary position, as described in my "Photoshoot" topic.
Disclaimer: this describes my experience, your results may vary. Your pleasure is your responsibility.
RD makes high quality Dolls and accessories. TB makes high quality Light-weight Babes (I am an old guy)
Enjoy life, it is later than you think,
Missionary