Jeffrey Campbell Mattix Platform in Green. - size 10 (also in ) Jeffrey Campbell Mattix Platform in Green. - size 10 (also in ) Embossed croc leather upper with man made sole. Ankle strap with buckle closure. Heel measures approx 5 HPlatform measures approx 2 H. Imported. JCAM-WZ955. MATTIX. 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.