Prodene materials, 100% recyclable, have an average density of minus 20% compared to other rubber elastomer materials. That implies a reduction in weight and energy consumption, particularly for transport uses.
The density of a profile is the ratio between its density and the density of water.
Density has no unity.
To measure it, weigh a sample outside its volume of water, immerse it in water and then weigh the sample in water.
The tests are carried out according to ASTM D 792 standards.