Napama Iphone 4 4s Case Waterproof Dirtproof SnowProof Protection Cover (Pink) Water test case prior to installing phone Water Proof: Fully submergible to 6.6 feet / 2 m for 30 minutes Dirt Proof: Sealed from dirt & dust particles - meets or exceeds IP-69 Ingress Protection Rating Shock Proof: Withstands drops from 6.6 feet / 2 m - meets or exceeds MIL STD 810F-517 Snow Proof: Sealed from snow & ice - meets or exceeds IP-69 Ingress Protection Rating