These are Brooks running shoes with excellent grip. These are Brooks "Hyperion" running shoes. The size is 25.0cm, and they have been run for about 60km, including races. The lettering on the insoles is not peeled. Subjectively, they feel narrow. These are Brooks' highest-end shoes, with strong responsiveness, suitable for sub-3 to 3.5 hour marathon runners. I think they can also be actively used for speed training. Because the rubber + sponge sole is laid out across the entire shoe, it helps conserve your legs even in the final stages of a race. Also, since ventilation holes are directly opened in the upper, they do not get stuffy. In terms of feel, they are similar to NIKE's Zoom Streak, asics' Sky Sensor Glide, and adidas' Sub2. How about these for racing shoes or interval training? - Brand: Brooks - Color: Black/Red - Sole Features: Outsole with grip - Model Name: Running Shoes Thank you for looking.