The HMS Shirts and the Shirt Connector are machine-washable, but the Recorder is not. Make sure that you unplug and remove the Recorder from your HMS Shirt. Remember to put the Shirt Connector back into the zipped Side Pocket to protect it. Use the delicate cycle with cold water and liquid laundry detergent. Use half the dose recommended by the detergent manufacturer in order to avoid soap residues. Do not use softener or bleach products. Softeners are known to add a waxy film over the fabric, and thus will affect the fabric performance by decreasing the moisture-wicking power of the Hexoskin Shirt over time. Bleach products will damage the threads, and degrade the fabric. Avoid hand washing the Shirt as twisting and/or wringing can damage the electronic components embedded in the Shirt. Hang your HMS Shirt to dry. Do not put the HMS Shirt in the dryer as the heat can heavily damage the fabric and electronic components. Do not iron.