The Alpha will keep you secure while leaving you free to flow through your environment effortlessly. The minimalist nature of Earth Runners sandals offers a gentle reminder to yourself–and others–of the oneness you share with the Earth. Weight: 3.8 oz (single sandal, men's 9 / women's 11) Thickness: 9mm outsole + 1.5mm footbed = 10.5mm Sole: Vibram® Morflex Outsole (Globally Sourced)