In exceptional cases only, the strap may give off some color when it is very wet and high pressure is applied to it. You should take the wristband off when showering, bathing or in particularly sweaty situations. As a precaution, if the strap does get wet, keep it away from clothing and let it dry. If it has stained your skin, you can be sure that only completely safe dyes have been used in its manufacture and that you can remove any staining with a little soap and water.