That depends on what you purchase, it could be USPS, Fed-Ex or even both.We take full advantage of the USPS policy of "if it fits it ships". In most cases if it can fit in a USPS priority flat rate box this is how it will ship. Some items can not fit and these will ship Fed-Ex. If you want your order to ship only via Fed-Ex you may specify this in checkout if you are willing to pay the additional fee.