Mad Rock Drifter Climbing Bouldering Shoes Science Friction Gray Red Black 4. These were a customer return due to the sizing not being correct. The tag on the inside of the shoe indicates these are a 7 but the measurements according to Mad Rock's size chart don't match up. These measure 22 cm toe to heel on inside of shoe, which on their size chart is a 4. I've included the size chart in the images.