These Brooks running shoes, the "Hyperion," offer excellent grip. They are size 25.0cm and have been used for approximately 60km, including races. The insole lettering is intact. In my opinion, they feel a bit narrow. These are top-of-the-line shoes from Brooks, with strong responsiveness, suitable for runners aiming for sub-3 to 3.5 hour marathon times. They can also be used effectively for speed training. The full rubber and sponge sole helps to conserve your feet even in the final stages of a race. Also, the upper has direct ventilation holes, so your feet won't get stuffy. In terms of feel, they are similar to the Nike Zoom Streak, Asics Sky Sensor Glide, and Adidas Sub2. Would you like them for racing shoes or interval training? - Brand: Brooks - Color: Black/Red - Sole Features: Grippy outsole - Model Name: Running Shoes Thank you for looking.