My 7 year old has a pair of Fly shin/knee pads. He now also has a pair of Fox boots. We do not have any riding pants for him yet. Can someone explain to me just how the shin guard is supposed to fit down inside the boot, or is it supposed to go outside? Are these meant to be used with hiking boots only or what? We've tried them down inside (left marks on his legs) and on the outside (knee pad just kinda flops around since there's nothing to hold it in place) and they won't really fit under his jeans with his boots on. Is there a solution? TIA for your help.