Logan Ancient Mediumweight Tartan Stewart Christie & Co. Ltd Logan Ancient Tartan Crest Wooden Wall Plaque Shield For Everything Ancient Logan Tartan Material and Fabric Samples Scots Connection "Clan Logan Tartan " Sticker by ljrigby Redbubble. Product detail: Features ergonomic shoulder straps with dynamic size adjustment for the perfect fit. Fully padded back panel with breathable mesh fabric. One large main compartment with a front utility pocket for easy organization.