361 Spire 3 Women's Ebony/Black The 361° SPIRE 3 running shoes are back as a reliably energized neutral running favorite. Specifically designed with the runner in mind, these running shoes feature impressive comfort and responsiveness. QU!K Flex Forefoot offers a natural feel and quick turnover during the run. The carbon fiber plate made with QU!K Spine technology offers stability around the forefoot for a more efficient ride. Upper: Direct-attach upper provides lightweight support and structure. Mesh offers breathable flexibility. Padded tongue and heel collar enhance comfort. Lace-up front offers an adjustable fit.Midsole: Molded blend of QU!KFOAM™ for additional comfort and support. QU!KFOAM™ vertically assembled in the QDP Interlink System provides cushioned guidance from contact phase through the gait cycle with medial posting and arch bridge for additional support. Fitz-Rite midfoot technology provides a soft internal webbing that helps hold the foot secure.Outsole: Anatomical flex grooves biomechanically designed to promote natural foot motion with blown rubber to give a smooth, soft ride.