PCI Racing driving shoes are a must have for safety and performance. Fully SFI 3.3/5 rated to meet the standards of most racing series. Top of the shoes is made of 100% split sweet leather. Lined with knitted nomex fabric laminated with FOAM padding. Embroidered logos The bottom sole of the shoe is made of rubber material. Laser engraved logo on the rubber sole has been done. Laces are made of Nomex thread and is fire resistant as well. The insole is also made of knitted Nomex fabric laminated with era rubber sheet. Shoe Sizes: 6, 7, 8, 8.5, 9, 10, 11, 12, and 13. Size Chart Size (US) Size (EU) Length (in) Width (in) 6 39 10 in 5.9 in 7 40 10.4 in 6.02 in 8 41 10.8 in 6.14 in 8.5 42 11.2 in 6.25 in 9 43 11.6 in 6.37 in 10 44 12 in. 6.5 in 11 45 12.4 in. 6.63 in 12 47 13 48