Senator Rodney Ellis speaks to the media in preparation for Tax-Free Weekend, at Walmart's brand new Galleria Supercenter, Wednesday, July 29, 2015, in Houston. Senator Ellis, who authored the original Tax-Free Weekend Bill, and Walmart, shared details on how to prepare, what is tax-free and what is not, and what the holiday means for business and consumers. (Cody Duty / Houston Chronicle) Photo: Cody Duty, Staff / © 2015 Houston Chronicle