If you want to swim in our binders, you should be able to do so. We do suggest going up a size, as it's really important to not be binding too tightly when doing any strenuous physical activity.
As long as you are comfortable and safe about it, binders can be worn during physical activity. It's important to take the binder off/cease the activity if you notice any sort of pain or discomfort. If you’re not sure, or you have extenuating health conditions, we strongly recommend checking in with your doctor before binding. Know YOUR own limits and take it easy, take baby steps if you’re worried, everybody is different.
Do not try to put your binder on while you or the binder is wet, you won’t be able to get it on and you run the risk of breaking seams. When taking a wet binder off, be sure to go slowly and be gentle with it. Don’t rush it and don’t panic! Ease it off with gentle tugs. Most swim suits are made from spandex/nylon which is what we use, so the material isn't an issue. We suggest having a dedicated swimming binder to ensure that you have a dry one available after swimming. Rinse and dry the binder after swimming to get salt and chlorine out, but water should not wear on your binder negatively.