Minimalist Everyday Carry. The Sutter Tech Sling, named for California Gold Rush explorer John Sutter, is the ideal size for creative explorations with your NEW iPad Pro, along with the NEW magnetic Smart Keyboard Folio and Apple Pencil (2nd generation). The strap on this one-strap daypack swivels 180 degrees, so the Sling stays balanced on your back and snug against your body. Swing it around one shoulder for easy access in crowded spaces. Also fits the NEW MacBook and Surface Pro 6.