The Athos gear has not been designed or tested for use underwater. All of the clothes are sweat proof, but because the sensors need to be in constant contact with the skin for data collection, they cannot be used underwater. We can handle the occasional splash, rain, and heavy sweat, but having too much water between you and the sensors will cause erratic data. Keep in mind that the Core, in particular, should not be submerged underwater as it is a non-waterproof electronic device.

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