Get free shipping and sales for the adidas by Stella McCartney Fortanima Black/Light Clay/Chalk Footwear Don’t let a few snow flurries get in between you and your running routine. Equal parts high-performance running shoe and warm, fashionable boot, the ‘Fortanima’ from adidas by Stella McCartney is ideal for cold-weather running or walking. Insulated synthetic upper. adiPRENE in the forefoot maintains propulsion and efficiency. AgION anti-microbial treatment stops odors, bacterial and fungal growth. TORSION provides adaptive midfoot support. Studded rubber sole for traction.