Inflatable dildo that only inflates "inside"?

Sex Toys
1

My girlfriend and I have been playing a little with dildos on her. We first bought this dildo Marc Dorcel - So Dildo (http://www.amazon.com/Marc-Dorcel-Dildo-G-Spot-Pink/dp/B009IIESI0) which my girlfriend likes a lot. She likes that the ends are bigger than the shaft, and she likes to use the biggest end, but it hurts her vaginal opening when she puts it in and when she takes it out. So we bought an inflatable one. You know, inflate it when it is is inside so it wouldnt hurt her opening, so we got this one Cock Locker inflatable medium (http://www.lovehoney.co.uk/product.cfm?p=2962). She says it is okay, but the downside is that the entire dildo inflates, which means that when you pump it up while it is inside it still hurts the opening.

So does anyone have any tips on an inflatable dildo that only expands on the part that is inside the vagina?

We are considering this one: Doc Johnson Inflatable (http://www.lovehoney.co.uk/product.cfm?p=16582). It looks like it only inflates on the inside. Anyone have any experience with this one, or anything similar? Thanx!

2

I had the exact opposite problem. Inflaplugs and infladildos always expanded in a nonuniform fashion, right where I didn't want them to expand, i.e. inside and outside, never at the ring. That's common for balloons. I ended up throwing all of them out, with the exception of an L-shaped, small prostate plug, which tends to avoid other side effects due to its smallness.

You might try looking for a solid-core anal plug with a long stem and a noticeable bulb-to-stem circumference ratio — only the bulb (or something similar) should inflate.