There are two ways your question can be taken, and I'll try to answer both.

Silicone can be made in different densities, so the force required to flex silicone can be changed - for instance Vixen Creations' silicone tends to be soft and easy to bend, whereas the silicone used in silicone prostate massagers tends to be much stiffer. All are flexible, and can be bent, usually to between 90 and 180 degrees, by hand. Jelly tends towards the floppy side, so if you're looking for a silicone toy that more closely approximates the squishiness of jelly I'd say go for a Vixen toy.

The above deals with stiffness, but if your question has to do with the ability for silicone to take being bent then it is extremely flexible, more so than jelly. You can bend your silicone toys over and over with very little risk of them breaking - I've never broken a silicone toy and haven't heard of it happening to anyone else, either. Silicone is pretty much a lifetime proposition as far as durability is concerned. less

There is no doubt that a jelly toy like the Royal Jellies is more flexible than the silicone Tantus Scout. In fact I've added stiffening wire to several jelly vibes because we found them too flexible.

On the other hand the Tantus silicone vibes like the Scout (don't own) & Maverick link (own) are very stiff - not likely to bend 90 degrees.

I don't know why the flexibility is important - but I will say that due developing a sensitivity to most jelly products we've gotten rid of all but one of our jelly toys - the remaining one we cannot use without a condom.

We've just purchased the O2 Revolution link which is a much softer formulation than the Scout - so if it's flexible you want - I'd suggest the O2 - or a formulation similarly - like the Raquel link, O2 Niagara link less

There is no doubt that a jelly toy like the Royal Jellies is more flexible than the silicone Tantus Scout. In fact I've added stiffening wire to several jelly vibes because we found them too flexible.

On the other hand the Tantus silicone vibes like the Scout (don't own) & Maverick link (own) are very stiff - not likely to bend 90 degrees.

I don't know why the flexibility is important - but I will say that due developing a sensitivity to most jelly products we've gotten rid of all but one of our jelly toys - the remaining one we cannot use without a condom.

We've just purchased the O2 Revolution link which is a much softer formulation than the Scout - so if it's flexible you want - I'd suggest the O2 - or a formulation similarly - like the Raquel link, O2 Niagara link less