Old-School Style, Modern Tech. Tracing its lineage directly to the OG Clifton 1, the Clifton One9 takes old-school upper styling with an open-hole mesh underlay and gives it a fresh spin with the Clifton 9's supreme comfort and iconic tooling. Retro style doesn't mean sacrificing maximal comfort for everyday wear. These are the HOKA Clifton One9 Lifestyle Shoes in Black/Aster Flower, Size 5.5.