IT is a modern and scientific approach to design and production of organic clothing made from 100% cotton cellulose fibers and dyed with anti-bacterial herbal dyes. It is confirmed that due to the proper moisture absorption, cotton ensures the confort of covering and manage the ventilation of clothing while it prevents from accumulation of static electricity in micro climate between the cloth and body skin. This phenomenon makes cotton textiles suitable for a comfortable fit. However, the relatively high moisture absorption of cotton is a factor in accumulation of some bacteria such as Staphylococcus aureus. Legaâ??s solution for this problem is dyeing cellulosic substance whit antibacterial natural herbal dyes which is covered in this article by its scientific details. Currently, Lega is manufacturing kinds of towels, menâ??s and womenâ??s underwear, and antibacterial cotton socks. It is emphasized that antibacterial properties in Iran is mostly fullfilled by using nano silver particles, while lethal harms of nano silver particles for human liver has made this method obsolete in some western countries. Lega products have antibacterial approval from the relevant reference laboratory.