Durex is the trademarked name for a range of condoms that used to be made by British company SSL International. This company was sold to Reckitt Benckiser in July 2010.The name, which the London Rubber Company trademarked in 1929, is a portmanteau of "Durability, Reliability, and Excellence", though some people mistake it as being "Durable Latex".Durex condoms represent around one quarter of the global market for prophylactic sheaths, manufacturing around one billion units per year in 17 factories worldwide.Durex condoms are the most popular brand of condoms in the USA The Durex range includes nine varieties of latex condom, including the Sheik and Ramses brands popular for decades in North America, and the Avanti condom, the first male condom made from polyurethane. Polyurethane condoms do not suffer from "latex rot", and are suited for users who have an allergic reaction to latex (a common occurrence and one which until now had not been responded to).In August 2007, Durex announced that it expected to launch a new line of condoms that it claims will help men get a firmer erection and increase penis size. The condoms will contain a gel in the tip that dilates arteries and increases blood flow to the penis.Durex condoms was declared the runner-up of the most account sales of condoms in the United States, with Trojan condoms being no. 1.