Mighty Laptop CaseAre these card holders or wallets? No, they are not... But we are such fans of what the folks at Dynomighty are making we figured that we offer them to you anyway. Made of Tyvek, with that soft and paperlike feel, these laptop and notebook covers are tear-resistant, water-resistant and stain resistant, yet you can write on them! They are designed around MacBooks and UltraBooks up to 14". Really make a statement when you enter your meeting or class and pull out your paper envelope, with your Mac!