EVA foam is what gives a budget sneaker a genuinely soft ride — it compresses under load and springs back, absorbing impact that would otherwise travel into the knees and hips over thousands of steps.
The air mesh upper is the other half. Open-weave mesh lets heat escape rather than trapping it against the foot, which is what makes the difference on a long walk in summer or a treadmill session in a warm gym.
Light enough that you stop noticing them, cushioned enough for all-day wear. Suited to daily walking, easy jogs, casual training, and long days on your feet.