From their website: Made From Upcycled & Sustainable Materials Upcycled Italian Leather Uppers True Stitch Construction For A Lightweight Feel Custom-Created Foam Insoles For All-Day Comfort Long-Lasting Recycled Polyester Laces Durable Rubber Outsoles For Longevity Fit: what you normally wear in athletic sneakers. Size: 9.5 US 1 inch platform Worn once.