STM Saga Backpack STM-111-170P-04, Dark navy, Polyester, Screen 15", Water-resistant, mesh pocket, Top carry handle, webbing loop, padded shoulder straps, Convenient key clip/fob, Internal zippered mesh pocket. The stuff of legend is what’s passed down from one generation to the next. Like the features in our Saga backpack—elements and amenities that have been inherited from predecessors on the STM family tree and are now iconic.