Maria,in order to have full seller protection via Paypal,you NEED to post all of your items using trackable postage.You don't give buyers an option.

As it is,if that buyer has paid via Paypal,you will lose the dispute & have to refund or replace.If they paid via bank deposit & they're genuine re non receipt of their item,they are well within their rights to report you for internet fraud.

Under ebay policy,you ARE responsible for lost items no matter what you write in your listings.

Sorry that you probably don't want to read the above but better to give you the heads up rather than delude or deceive you by writing prettied up or sugar coated rubbish.:-)