The insulin pump waterproof case features the â€˜TCâ€™ Aquaclip a wire thru seal which is watertight allowing a single wire up to 2.5mm (1/10th inch) thick to be used with the pump The Insulin pump case features the 'TC' Aquaclip a wire-thru seal which What does 'Temporary Immersion' Mean? The Wire-Thru Aquaclip� sealing system used on this Aquapac has been tested to the waterproofing level IPX7. This means that it is OK for rain, showering and sea-spray, as well as quick submersion in water. It is not depth rated, so not for diving or snorkeling. Some customers have been happily surface swimming with this case for years, but make absolutely sure that the seal is clean, undamaged and properly closed. And avoid tugging on the tube or wire. The Use of Aquapac Cases with Insulin Pumps Aquapac have commissioned research by Imperial College London into the use of the 150 (Radio Microphone case) and 550 (Connected Electronics case) after receiving a large number of customer enquiries regarding their suitablity for use with insulin pumps. Results show that, in some circumstances, insulin flow rate can be reduced by the case. In particular, low flow rates are impeded, and as such Aquapac can make no claim regarding the suitablity of these cases with insulin pumps. Use of these cases with insulin pumps is entirely at the discretion of the user. Aquapac has been advised to recommend that users of Aquapac cases with insulin pumps regularly check their blood sugar levels. Size: 8x3 inches The tests were conducted by Imperial College of Science, Technology and Medicine using a Roche Accu-Check Spirit insulin pump at a temperature of 20C at flow rates of 2U/hr and 10U/hr. The amounts of insulin delivered over 60 minutes observed were as follows: 2U/hr not in a case - 0.0131g (flow rate of 100%) 2U/hr in Aquapac 150 - 0.0106g (flow rate of 81%) 2U/hr in Aquapac 150 - 0.0056g (2nd test model)(flow rate of 42%) 2U/hr in Aquapac 550 - 0.0121g (flow rate 92%) 10U/hr not in case - 0.0864g (flow rate of 100%) 10U/hr in Aquapac 150 - 0.0878g (flow rate of 100%) 10U/hr in Aquapac 550 - 0.0903g (flow rate of 100%) 21st August 2006 Aquapac International Limited offers a Manufacturer's 3-year Warranty that the cases, if used in accordance with the instructions, will be free from defects in workmanship and materials for three years from the date of purchase. We are not liable if testing and examination disclose that an alleged defect or malfunction does not exist or was caused by misuse, accident or neglect, or failure to follow the instructions. Neither we nor our resellers can be held responsible for loss or damage to items stored in the case, caused by misuse, accident or neglect, or of failure to follow the instructions. Any returns of this product need to be made directly to the manufacturer. Non returnable to Pump Wear Inc.