RFSU is an organization that holds a history of 75 years dealing with products ranging from condoms, lubricants and sex toys. Klick natural glide lubricant is known as a safe glyde lube for couples to feel the intimacy. It is completely paraben free and it gives a complete natural feeling as if no lubricant is used. This best glyde offers the moisturization which stays for more duration than the normal glide. It has a favorable 5.0 pH value which proves it neutrality. Can be safely used with condoms and sex toys.