In April 2007, some initial pictures of what were believed to be the new Mercurial Vapor boots were leaked onto the Internet. Not much could be ascertained from the pictures, but they did show that the MVIVs might have a cover over the laces in the same vein as the Adidas F50s. The Nike "swoosh" was also larger than on previous versions. Only two colourways were shown, those being orange peel/obsidian and anthracite/vivid blue. This boot weigh in about 210g (or 7.4oz). Later in the year, a limited edition version of the Mercurial SL was put up for sale online. Only 2,008 pairs were made available in Firm Ground and 500 pairs in Soft ground, costing £250 (€400/$600) each. This version of the boot is made almost entirely out of carbon fibre and weighs a mere . The shoe is made in one colour, black, with two pink "swooshes" on each boot.