NEW APL Athletic Propulsion Labs Lusso Slides in Black, Size 8. Retail $195. DETAILS Detailed, cross-stitched 100% Sheep Nappa Leather strap and footbed accented with a matching laser-cut embossed APL logo provides a custom, comfortable fit. A 3D molded footbed which massages your feet with every step. A 100% EVA Nappa Leather outsole adds the perfect detailing to complete the look. The Nappa Leather strap keeps your foot cool and dry whether you wear socks or like to go barefoot. Soft and resilient Propelium midsole provides superior comfort that will maintain structural integrity longer than conventional EVA. Newly developed lightweight Propelium midsole and outsole feature a segmented lattice-grid leather traction pattern.l