Using the Klein Tools 221486 Hydra - Cool Climber System is easy. First, put on the ankle straps and adjust them to a comfortable fit using the VELCRO® fasteners. Then, position the climber pads on the Klein Claw Climbers. When climbing, make sure the gaffs are firmly in place on the pole or tree surface. As you climb, the Hydra - Cool pads will keep your feet cool and dry, and the Poron® cushioning will absorb the impact of each step. Remember, always check the VELCRO® fasteners and the gaffs before each use to ensure they're in good condition. After use, clean the system with a dry cloth. If it's dirty, you can use a mild soap and water, but make sure to dry it thoroughly to prevent rust. Store it in a dry place when not in use.