All washing instructions are written in plain English and stitched into our jackets. Please check there if you are unsure. As a rule of thumb, all jackets apart from the Merino Mechanics Jacket can be machine washed on a hand-wash or delicate cycle at 30 degrees. Make sure you use a delicate detergent and do not use fabric conditioner. Don't worry if you have accidentally used fabric conditioner, simply rinse well. To clean your Merino Mechanics Jacket please dry clean only. We recommend washing your jacket to remove a buildup of sweat and dirt which can damage its performance.