A good athletic shoe comes down to how well it matches you—your foot shape, your movement, and what you’re doing in it. Here’s what actually matters, stripped down: 1. Fit (most important) You want about a thumb’s width of space in the toe box Heel should feel secure with no slipping The width should match your foot (not too tight or loose) If the fit is wrong, nothing else will make the shoe good. 2. Cushioning (depends on activity) Running → more cushioning to absorb impact