Carbon nanotubes (CNTs) yarns are composed from long, flexible, conductive and strong assembled CNTs fibers. They have enormous potential for use in a broad range of applications because of their lightweight and ability to provide enhanced mechanical and electrical performance. The use of CNT yarn(s) as the conductor component for developing stretchable electronics systems represents a new generation of electronics. The main challenge in these composite systems is to combine a conductor that can provide high conductivity, yet retain the conductivity under large deformations. The limiting factors for the electrical properties of CNTs include the contact resistance between crossing nanotubes and between nanotube and matrix, the conductivity of the matrix, and the number of contact points between nanotubes in the network. To enhance the stretchability of the conductive electronics, the use of braided CNT yarns was studied. This work investigates composites structures based on braided CNTs yarns fabrics and elastomeric (polydimethylsiloxane (PDMS)) matrix. The effect of different braiding configurations on the mechanical behavior, the conductivity/ conductivity stability against stretching (extension-retraction cycles) of the braided composites will be reported.