When at all possible, hand wash your Columbia Omni Tech outerwear and jackets.  If necessary, you can put it in the washing machine, but make sure to use a delicate or hand wash cycle. Only use gentle detergents as these can have a negative effect on the performance of your Columbia Jacket Omni Heat performance. When in doubt, contact Columbia's customer service for approved detergents. After washing, we always hang our Omni Heat Columbia jackets to dry.