All Sixinch products come in 3 declinations:
Soft Flex is colored into the mass with a UV stable pigment, 3 – 6 layers build up, only for indoor usage, medium strong , surface always bumpy due to the product.
Flex Plus is an advanced 3 layer coating system, with an elastic PU, the endlack has a special soft touch feeling, also here a UV stable pigment, very strong, indoor / outdoor usage, smooth surface.
Based onto the same technique as the Flex Plus, but with different chemicals it provides a solid hard topcoat to be compared as polyester. Indoor / outdoor usage, also with a UV stable end lack, slightly bumpy surface, extreme strong.