The feel and flex is actually almost identical to original ones. They aren't at all brittle or fragile, and you can bend them, perhaps, about 4mm without fear of it snapping but are solid and firm too :-) I'm actually pretty sure I'm using the same material that Sinclair did, because other than the colour it's almost impossible to tell the difference from mine! Interestingly, my original one has the red sticker slightly offset, in the flag too, and even that's the same! I do think that as a budget alternative you'd be hard pressed to tell it apart and for safety rather than show they make a great alternative!