0.3 inches thickness, through countless data analysis, we have designed the most suitable size charging pad, which is perfect for small places but it's also big enough to put phone anywhere on it to charge., with anti-slip rubber to keep it stays in place.Our wireless charger is suitable for phone case which is within 4mm/0.16inch. But for more efficient charging, we still recommend you to remove the case before charging. (As metal attachments or credit cards may damage your phone.)