Josef Seibel Mens Luke 07 Leather^Synthetic Synthetic sole Please click here for the Josef Seibel footwear size guide. For those care-free days of heading to the sand and being a beach bum! Leather upper. Easy slip-on. Leather and synthetic lining. Cushioned insole. Polyurethane outsole. Imported. Measurements: Weight: 15 oz Product measurements were taken using size 45 (US Men's 11-11.5), width M. Please note that measurements may vary by size.