Slab climbing is a type of rock climbing where the rock face is at an angle less steep than vertical. It is characterized by balance- and friction-dependent moves on very small holds. Slab climbing is technically any angle less than 90 degrees from horizontal, and anything with 5 or so degrees off of 90 has more in common with vertical climbs but would still count as slab. It is often not leadable, or climbable from the ground up, unless it has pre-drilled bolts to protect the climb, making most slab climbs either top rope climbing or sport climbing. Special techniques such as smearing are necessary to climb slab. Smearing is the act of applying a large amount of rubber to the surface youre climbing on. Slab climbing is one of the most technically demanding styles of climbing, requiring intense concentration and precise foot placement. Some tips for better slab climbing include trusting your feet, keeping your weight over your feet, not overthinking your moves, and wearing flat, flexible, and comfortable shoes.