Can I return my Adjustable Base? August 27, 2020 15:58 Updated We don't offer a trial for the Adjustable Base. We're only able to offer free returns if you haven't opened the package. Related articles How do I start a return? Can I return my Helix Foundation? Can I return the Wedge Pillow? Does every Helix Product include a 100 night sleep trial? Do I need to use the retainer bar that was provided?