Gear4's HTC Bolt Case (Cast Iron) utilizes D3O® unique technology to protect your mobile device. This technology is based on the innovation of capturing the benefits of non-Newtonian shear thickening material in polymers that can then be engineered for real world impact protection solutions. These enhanced properties offer a number of different performance benefits depending on the base polymer used and the intended application. D3O®’s global patents ensure that no other company can offer the same type of protection. D3O® materials are engineered to be fit-for-purpose but as a solutions provider D3O® is also able to customize the various formulations to a partners specific requirements.