Bulk means one thing, drop protection. And that's exactly what the Impactband is designed for. BaseOneLabs are behind these bulky bumper cases for the iPhone 4 which are now compatible with both the Verizon and AT&T iPhone 4. They claim the Impactband has the right amount of bulk and material density to achieve the ultimate shock absorbent capabilities. The Impactband offers full access to all ports and buttons and it's available in a wide range of colors, 8 to be exact. It's priced at $25.