The Wood SI Series uses only responsibly sourced FSC® Certified materials along with our DuPont™ Kevlar® case protection. We've fused the Evutec Wood S Series with a soft, shock-resistant, TPU inner lining to create the evolutionary Wood SI case. The end result is a sleek shielded case without any metal substances or components to interfere with cellular reception.Introducing our newest protective product in our Wood Series. The Wood SI Series uses only responsibly sourced FSC® Certified materials along with our DuPont™ Kevlar® case protection. We've fused the Evutec Wood S Series with a soft, shock-resistant, TPU inner lining to create the evolutionary Wood SI case. The end result is a sleek shielded case without any metal substances or components to interfere with cellular reception. Compatibility: Apple - iPhone 6/6S AP-006-SI-WA5