Can I Swim with Invisalign Aligners?

Another concern with swimming with them in is if you take in a lot of water.  The aligners COULD trap the chemically treated water around the teeth and over time may affect the enamel.  Swimmers teeth is common with competitive swimmers and could be worsened with aligners.  Maybe.

Plus we don't recommend taking them out for sports, only for eating and flossing and brushing your teeth.

I think that it should be fine to swim with the aligners in your mouth as long as they are fitting well. If they are loose or not fitting well and there is a chance they could fall out of your mouth in the water I wouldn't wear them.