I'd avoid the Jack Rabbit, simply because jelly isn't made to last like silicone is. Jelly generally shouldn't be kept more than a year, while silicone can last a lifetime (perhaps not a lifetime with a motor, but certainly a very long time at any rate). less

Jelly, among other downsides and potential dangers of the material, is porous and retains bacteria and things and can't be sanitized. You shouldn't keep them for very long because of this and, from what I've heard, the material does start to break down after a while. Do some research and the stories will scare you. I would never buy jelly toys. Here's what EF has to say about jelly: here. They're a 2 on EF's safety scale which is just not good enough in my opinion for me to put it in my body. They can have toxins, pthalates, skin irritants, some of which have been linked to cancers and most of which have caused problems for many women including vaginal infections and skin irritations. They also often have an odor to them which most people find unpleasant. They sometimes cause things they are stored with to take on their smell and they can melt or damage the material of other toys they are stored with. While some people use them without problems, and some people opt to use them only with toy covers or condoms, many women report burning and discomfort when using jelly and/or have infections or other problems afterwards. They should never be shared between partners, and you certainly can't use the same jelly toy for both anal and vaginal play like you can with a toy you can sterilize. It's a cheap material with potential risks and a short lifespan. Just not worth it IMO. less