Fabrix Cases has just announced a new collaboration. The Singapore based company teamed up with lifestyle boutique Cumulus to create an all new version of their popular Satchel case. This time the Satchel features a jet black industrial wool felt lined with matching tan leather. In addition to the detachable handle the Satchel now comes with a detachable sling strap as well. The size of the Satchel now accommodates both the Mac Book Air 13″ or the White Mac Book or Mac Book Pro 13″. If you’ve got the smaller, 11″ Mac Book Air you can team it up with your iPad and fit both safely inside instead. The new black Satchel is available now for $99.90 via the Fabrix Cases web site here.