Small, Medium, Large, X-Large FIRMA energywear is made of a polyamide-based yarn that have had bioactive minerals incorporated into the matrix of the yarn itself. Previous fabrics achieved similar results using coatings and capsulesembedded into the yarn, but those would wear out with washes. FIRMA’s effects will never wash outas they are part of the yarn itself, making it a great innovation in the world of shapewear & fashion.