BOTH NON SLIP AND WATERPROOF: We've been thinking about how to make disposable shoe covers both non slip and waterproof. After studying the fabric available on the market, we came up with the idea of , which is double layer that adding a slip-proof plastic material to non-woven soles. It's a great idea, and when you get it, you'll agree that!EXTRA HEAVY DUTY MADE: In order to make the disposable shoe covers as durable as possible, we used heavy duty material, which is more than 60% thicker than others, and improved the manufacturing process, such as strengthening the rubber band. They canbetter suitable for working long hours, such as cleaning, nursing or farm working.LARGE SIZE FITS MOST: Whether shoes or boots, our shoe covers are designed to fit all sizes up to a US male size 11.VERSATILE PROTECT TRUSTED: Trusted by Contractors, House Keepers, Realtors, Handyman, Farmer, Movers and Workshop.QUALITY SATISFACTION: If every anything goes wrong or the cover is not to your liking, your purchase is protected as we stand behind the quality of our shoe covers.