article_snippet: Each of the covers are made of silicone and act like standard covers to block out dust and dirt.
article_snippet: Each of the covers come in two sizes - one for standard Macs, which includes the 13-inch and 15-inch MacBook Pro, the MacBook Air 13 and the Apple Wireless Mac keyboard (pictured), and one for the 11-inch MacBook Air .
article_snippet: a team of designers at California-based Disk Cactus has set up a Kickstarter campaign to fund production of at least 1,000 covers, but hopes to be able to mass produce Each of the covers by the end of the year.
article_snippet: However, in recent years they have become hugely popular elsewhere.