After a few seasons your MSR tent is going to get a little grimy. Wash away abrasive dirt and debris and restore the water repellency with the MSR Shelter Wash and Restore Kit. One bottle cleans your tent and the other brings the weatherproof fabric back to life. It couldn't be easier. Regular cleaning and maintenance will improve your tent's performance and extend the life of the fabrics significantly. This simple, two-step system cleans your tent's fabric, reduces the odors caused by mildew and general use, and restores the water repellent finish. Each package contains one bottle of tent washing solution and one bottle of DWR restoring formula. Both solutions are water-soluble and safe for use with any tent fabric.