Do Simba Bases come with a guarantee? November 06, 2018 13:29 Updated Follow Of course! We are proud to offer a 1 year guarantee on our Upholstered Bed to back our expert craftsmanship. Related articles What does the mattress 10 year guarantee cover? Is there a guarantee for the Pillow and Duvet? What about the Mattress Protector and Sheet? Does the mattress need to be kept in a plastic wrap during the trial? Do I need a receipt during the guarantee? Does the 100 night trial apply to the Cot Mattress?