The Main Material: Silicone & Environmental ABS.</br>Compatibility: iPhone 5 5s 6 6Plus 7 7Plus/ Samsung Galaxy and Other Smartphones.</br>X-Grip Clamp: Easy to install and release without any tool.</br>Warranty: 1 year warranty?? 45 days money back and friendly customer service.</br><br/>http://www.amazon.com/gp/product/B015PTVKOA