It worked perfectly – it was splashed lots and fully submerged a couple of times and the pump remained bone dry. The pack is transparent and flexible so you can see the pump and bolus without taking it out.
It comes with a warning that some people have found that the tube gets slightly compressed by the case but I’ve had no problems with that and cgm never showed any sign that I wasn’t getting the right amount of insulin when using the Pac. I’d recommend it.
Happy holidays, I hope they fall on the sunny week of the year.