1.Don't wash the bands with over 50°c water. 2.Don't keep the bands in sunny and humid place. 3.Don't soak bands in the liquid like oil. 4.Don't let the bands be sratched by the sharp object. 5.Keep bands in the sealed plastic bags when you don't use for long time. 6.When there's some stains on the surface , please clean it with water and don't soak it in water for long time.