REM-Fit provides a 100-night sleep trial on all of their mattresses. There’s no catch; if you decide the mattress isn’t for you at the end of the trial period, you can return it via a free collection service and receive a full refund. REM-Fit ask for a minimum of 30 days before you start to process a refund, to give your body time to adapt to your new mattress. The mattress must be clean in order to be refunded, so it’s recommended to use a mattress protector during the trial period. A £35 fee will be deducted to spot-clean any marks. Mattresses returned during the trial period are either donated to charity or sold through the British Heart Foundation. They may also be re-sold on REM-Fit as ‘rejuvenated’ mattresses.