| Donaldson vents on speaker phone, headset speaker, and microphone
Sync/charge jack accessible via silicone plug
Sound transmits through the case
Layer 1:
Thermal formed protective clear membrane to safeguard screen and keyboard against scratching as well as dust and dirt intrusion.
Layer 2:
Hi-impact polycarbonate shell.
Layer 3:
Silicone skin absorbs bump and shock (silicone includes innovative retaining features to hold it in place). | 
