Extensive research went in to developing the best possible fabrics for the neroXII. The goal was to achieve a fabric that enhanced compression, improved power, elasticity, but still retained the lightweight that you expect from blueseventy neroTX.
We focused on elasthanne fibers in the suit (that give it the stretch and more importantly pull force) in the fabric. As shown in fig 1a neroXII fabric has 56% more elasthanne fibers than in neroTX and double the fiber % than a standard performance swimsuit.
Fig 1a Elasthane fibre % in race suit material
Certain fabric’s stress-strain properties are dependent on load direction (warp versus weft). By controlling the manufacturing process of the fabric, we have been able to craft material that has different resistant to force according the direction of the load placed upon it.
This means we are able to increase the lateral compressive force of neroXII and increase stretch in the vertical direction to improve range of motion.
Fig 1b shows the difference in tensile strength and modulus between the 2 directions of stress applied to the neroXII.
Fig 1b Direction strength and modulus in neroXII fabric
Using more powerful fabric presents 2 challenges:
neroXII suits are still extremely lightweight. (Fig 1c) Using a standard size 26 the kneeskin is only 107 grams. This is almost 66% the weight of standard performance race suits.
Fig 1c Weight comparison of race suits