Using this vintage Steele blue dyed linen and hemp sheet is like adding a touch of history to your bed. Simply put it on your mattress as you would with any regular sheet. Since it might have some age - related marks, if you want to get rid of them, you can wash it at 40C. While the sheet is still a bit damp, you can iron it to try and remove the marks, just like our dealer suggested. But remember, if you prefer to keep its original vintage look, there's no need to clean it this way. Store it in a cool, dry place when not in use to maintain its quality over time.