Offer add-ons like gift wrapping, special messages or other special options for your products. From adding a personal engraving, to upgrading to premium fabric, customizing products can keep your customers coming back. With Product Add-Ons, you can offer special options to your customers in a snap. Product Add-Ons allow your customers to personalize products while they’re shopping on your online store. No more follow-up email requests—customers get what they want, before they’re done checking out.