A long-lasting lint-free replacement for oil and silicone rags. Instead of using oil, Sentry uses a mixture of dry film corrosion inhibitors and lubricants to provide a fast-dying, water-displacing micro-bonding crystal barrier against rust, friction and wear. The waterproof shield will not attract dirt and it won't leave a slippery film like silicone.Whether your knife is used daily or is an investment piece, it deserves to be protected. TUF-CLOTH is highly recommended. Each cloth comes in a re-sealable pouch.