Trodat 4911 Clothing Stamp with StampDARK Tool - Customize Online Personalize your clothing with this non-toxic and easy to use stamp. Good for 40+ washes (up to 90 water temperature). Includes the StampDARK Tool - an easy-to-use tool, allowing you to make multiple imprints in exactly the same place for darker impressions. Up to 2 lines of text with approx 16 characters per line is recommended per stamp. It is necessary to wait 24 hours before first wash.