Revit Back Protector Insert - Seesoft v. RV (Level 2) From  £41.99

Looks like it will do what it says on the tin. Don't want to test it though...
Very tight fit in the purpose built Revit jacket pocket, which I guess is a good thing.

Use this on other Revitt jackets, moulds to your body, great service!

Bought this to go with my Eclipse jacket. I find it really comfortable and not as heavy as some of the other back protectors out there.

Can't fault the customer service once again fast, reliable and well packed.

Perfect fit for my jacket, nice and tidy

This back protector gives me peace of mind, used with the summer beathable jacket

It's light and unnoticeable when worn, but, I prefer sastec armour as it is just as comfortable but wider and thicker. I would have used sastec but the pocket was too small in my Revit Sand jacket

I can't comment on the effectiveness of this item and I hope I never will, as that would involve me falling of my bike !! It fits into my jacket very well but it does feel like I've got a plank in there or that I'm carrying a rucksack. I suppose I'll get used to it and after all, a little discomfort is better than a broken back.