D3O is a smart material scientifically proven to deliver superior impact protection through advanced shock absorption. D3O is integrated into all GEAR4 phone cases to provide premium protection for your device. GEAR4 is the first case brand to use INJECTABLE D3O delivering more impact protection per cubic millimeter than other leading materials. This enables GEAR4 to create ultra-slim, ultra-stylish, ultra-protective cases that can make an impact and survive modern life.