After trying on the Genetric belt and making sure that it is too long for you. 1. Flip the buckle over and lift up the square panel to detach the leather strap. 2. Take a pair of scissors and cut off 2 inches of leather ( make sure to cut it from the side you detached from the buckle ). If it's your first time we recommend cutting in intervals of 2-3 inches as it's impossible to reattach the leather you cut off. 3. After reaching the desired length, simply slide the strap back into the buckle and close the panel tightly.4. Try on the belt again and if the strap is still too long repeat from step 1 until the belt fits perfectly.