What with all this Nano Technology being talked about; well its water of a ducks back to Crep Protect - literally! Crep protect is an invisible, optically clear protective barrier over your shoes once the product has been sprayed on, beading liquids to reduce stain and dirt deposits. Surfaces treated with the product repel most liquids, making cleaning as easy and sufficient as the wipe of a damp cloth. Depending upon usage, this durable treatment can last for approximately two weeks. With the simple application of a spray, Crep Protect is extremely quick drying, allowing a fuss free treatment.