The phrase "great warranty" means that a product comes with a promise from the manufacturer to fix or replace it if anything goes wrong within a certain period of time. Full definition
However, now there are dozens of mattress startups out there that are direct to consumer, offer great warranties, have long return windows, and low prices. (businessinsider.com)
Warranty: We were actually a little surprised that some of these had some pretty great warranties. (geekwrapped.com)
Where it could go wrong Great build quality, plentiful tech, and great warranties only go so far. (automobilemag.com)