What about this slider on your knee??

Dainese and all others have to kneel infront of this slider. Only thing missing is matching colour for the plastic.

Get it at:

Pro Slide
Unit 1, Congleton Buisness Center
Thomas Street, Congleton, Cheshire
England
Phone: UK 01260 298704

This is nothing you actually wear, but I thought I add it here, cuz it's the coolest tankpad I've seen so far. Don't know where to get it, but the brand is Aegis. Ask your dealer.