• Optimal surface area
• Minimal profile 11mm-13mm thin
• Concave platform for secure foothold
• 10 adjustable pins per side for grip
• Premium bearings & seal system
• Grease port for easy maintenance 
• Stamp large recommended for shoe sizes: 10-15 (us) // 43-49 (eu)
• Stamp small recommended for shoe sizes: 5-10 (us) // 37-43 (eu)

More info available here: https://www.crankbrothers.com