Choosing the right insole starts with one simple question: what do your feet need to do most often? A runner needs a different feeling from someone who stands all day, and arch support should feel guided rather than forced.
Start with your main use case
For sport and training, look for responsive cushioning, a stable heel cup and breathable materials. For long standing, focus on shock absorption and heel protection. For alignment and pressure balance, choose a contoured arch support insole.
Check the shoe fit before trimming
Remove the original insole, compare the size, and trim gradually. Leave a small functional margin so the toes can move naturally and the insole does not curl inside the shoe.