There is nothing worse than seeing a mark or worse a scratch on your brand new iPhone; it just spoils the whole iPhone effect! However, it is not just minor damage to worry about; there is the weather and environment too to think about, water, sand and dust simply are not the best of friends with device.
However, there is the LifeProof Case designed for the iPhone 4 and with care to ensure that events that occur in everyday life, will not ruin the enjoyment of the iPhone lifestyle.
These are the features and details for excellent iPhone 4 LifeProof Case;
Ultra-slim and adds only 1/16” (1.5mm) to the depth of your iPhone and weighs less than an ounce (28g).
Unique combination of materials that will not stick to your pocket
Protects against every-day hazards—full IP-68 rating against water and dust, and designed to Military Specifications
Ability to swim and take underwater (2 meters/6.6ft depth). Optional adapter allows use of waterproof headphones underwater
Double AR-coated optical glass lenses provide unprecedented crystal-clear photo and video quality
High degree of shock and impact protection—tested to Military Specifications MIL-STD-810F-516.5 (2 meters/6.6ft drop on all surfaces and edges. 26 tests)
Fully sealed protection against minute dust particles
All phone features are operational while maintaining a high level of protection
Priced at around £50
Source [Bit Rebels]