When using your theme on my website, I found that I selected the attributes of the product, such as

Hello @yuepohualing, This area is not for the bug reports or issues, did not you see the messages prntscr.com/sye402 ? If you have problem, submit topic on the support forum www.8theme.com/forums/xstore-wordpress-support-forum/ using Submit topic button in the right sidebar! Anyway you always can check such things with default Wordpress Themes such as Storefront (http://prntscr.com/1362drh). By default woocommerce adds this text but for customization you can rewrite files, remove some actions/filters via your child-theme. For more details please, check with default theme and if the results will be the same then contact WooCommerce support to help you in such questions. WooCommerce has this comments by the way - http://prntscr.com/1362hvq. P.S. I would recommend you to have all products with preselected variation values and then you would be able to add some custom : .type-product form.cart table.variations td.value select option:first-child { display: none; } Approximate results will be smth like this -> https://gyazo.com/6ca9c19fe3ad27d4e32a8d92999cb644. The bug is when you clear selection. That's all what I could do here for you. Regards, Jack Richardson