Discover the Spontex Special Window. Ideal for a perfect result without streaks. On all glass surfaces - even on sensitive surfaces. Removes fingerprints and is 2x more effective against grease and dirt than a 100% cotton cloth. According to internal laboratory tests carried out in July 2018. Instructions for use: Washable up to 60°C. Do not use fabric softener or bleach. Do not tumble dry. Functions: Perfect, streak-free result; Efficient removal of fingerprints; 2x more efficient against dried-on dirt and grease; Washable at 60°C; Highly absorbent microfibre cloth - for quick and easy cleaning of windows, mirrors and glass surfaces.