The flexible, ultra-protective Tetra Force Strong Twist case is made from technologically advanced materials that can dampen and distribute the vibrations generated by a fall. It is ideal for anyone seeking maximum protection for their smartphone. The IDS (Impact Dissipating System) technology developed by Cellularline uses the innovative Versaflex material, which distributes the energy generated by the impact and prevents potential damage to the smartphone's external and internal components. The Tetra Force Strong Twist comes with a lifetime warranty. For more information, please visit the Guaranteed For Life section of Cellularline.