<p>When tsunami comes, emergency service workers usually have to wear a dry suit to rescue lives that are drifting and struggling in the tsunami. Therefore, rubble-resistant dry suit materials are in high demand. In this paper, in order to improve the penetration resistance of the dry suit materials, we attempted to introduce fiber which as a reinforcement into CR rubber. Effectiveness has been confirmed by evaluating penetration resistance and flexibility. Based on this method, we also developed a new hybrid structure with high penetration resistance against rubble.</p>