A-CLIMBING Concept 3 Climbing Shoes Size: US7.0 (24.9cm) It's been quite a while since I bought these, but there's little wear on the tip of the sole. Please check the condition carefully in the photos before purchasing. CONCEPT 3 is a high-end indoor climbing shoe focused on foot sensitivity and grip. It has the tightest fit. Also, to enhance the fit, the opening is made narrow to the extreme, so it may be difficult to put your foot in at first. However, it will quickly conform once your foot is in. The outsole "Powered by MASAZ μ" doesn't lose power even on coordination problems and supports all shapes of holds, so you can place your foot without worrying about the shape. The large toe rubber covering the entire instep is less than 1mm thick and supports toe hooks. These are universal climbing shoes that promise secure heel hooks with a heel shape designed to fit the narrow heels common in Asians and newly adopted technology.