Jeffrey Campbell Emersyn Mule in Brown. - size 8 (also in 7.5) Jeffrey Campbell Emersyn Mule in Brown. - size 8 (also in 7.5) leather upper with man made sole. Slip-on styling. JCAM-WZ914. EMERSYN. Step into comfort and fashion this season with these new shoes from Jeffery Campbell. Made with premium leather and a German sole. These pretty babies will keep you coming back for more.