Double Penetrator - Any Suggestions?

I been looking at double penetrator and have actually ordered two.. a glass one, which was as a mistake because they cannot be used solo or very well by the partner on you because they are not flexible. And I ordered a Crystalessence one, Crystalessence is similar to jelly (I know, I know, not the safest of material ratings), anyways, I haven't tried it yet and I don't think I will like it. While the vaginal side seems firm but not too firm, the anal side feels very flexible and I could even bend it in half. Does anyone have any suggestions on a good double penetrator toy?