NWT XL Pink Size and Color Sold Out Online Tried on Never Worn Our bras are made with 94% Nylon and 6% Elastane, using a super strong (but ultra soft) NILIT™ 6.6 yarn called Softex. All of our yarn is dyed according to Oeko-Tex Standard 100 and we’re Oeko-Tex certified. This essentially means every component of our bras has been tested for harmful substances and we’ve got the all clear.