Kim Parker Approved Designs</br>Meets Military Standard MIL-STD-810F: vibration and drop (Independently Tested).</br>Inner-layer of shock-absorbing silicone with an outer-layer of hardened polycarbonate?? providing two layers of protection.</br>Power-ports and audio-jacks are covered with silicone plugs to keep out dirt and debris. Dust filters protect microphone and speaker bays.</br>Green Protection - recyclable?? degradable?? and compostable plastic</br></br>Product Description