The Lattice Triple Rung is a training apparatus that allows you to measure and improve your finger strength. The apparatus features a 45mm top edge, a 10mm middle rung, and a 20mm lower rung, which is the Lattice measurement standard. The Lattice Triple Rung includes the standard 20mm rung as well as instructions to help you assess your maximum finger strength during a training session and compare it to your friends who have already used this apparatus! This information allows Lattice to determine if you have a 'low' or 'high' level of finger strength and to assign you a performance grade in climbing and bouldering. Lattice even offers you a completely free personalized mini-assessment!