The Crispi waterproofing spray for suede and nubuck leather boots adds water-repellency and helps maintain breathability to the leather. Imperwass spray assists in prolonging the effective lifespan and optimizes the performance of suede and Nubuck leather. It's not specifically a boot wax but helps to condition the leather. To apply the boot waterproofing spray, simply wipe off worn boots with a clean towel and spray the Imperwass generously onto the suede and nubuck. Allow to air dry and you're done.