Find the start date, end date, and any minimum use
Read the seller's written policy for the exact mattress and order channel. Check whether the trial starts at delivery, when a return request must be opened, and whether the seller requires a minimum number of nights. For example, Casper's current direct-purchase mattress policy describes a 100-night trial with returns after a 30-night adjustment period. Saatva's current direct-purchase policy describes a 365-night trial with no mandatory minimum. Neither example creates a rule for other brands or retailers.
Calculate the actual cost of a return
The stated trial length is only one term. Look for pickup or return-shipping charges, processing or restocking fees, condition requirements, and whether the refund returns to your original payment method. Casper says its direct mattress pickup and return are free after its adjustment period. Saatva says its direct mattress return has a $99 pickup processing fee. Policies and fees can change, so confirm them again at checkout and save the terms with your order confirmation.
Keep the retailer separate from the brand
A mattress bought through a marketplace may not carry the brand's direct-store home trial. Casper explicitly tells buyers of its products from other retailers to use that retailer's return policy. Amazon's general U.S. policy lists a 90-day return window for mattresses other than crib mattresses, but Amazon also directs buyers to the product detail page for item eligibility and explains that third-party-seller returns can differ. Check the selected seller, shipper, exact listing and return panel before paying; do not transfer a brand's direct trial to a marketplace order.
Make the trial useful for your decision
Before purchase, write down the last day to request a return and the contact method. Confirm your foundation meets the mattress's warranty and trial conditions. During the trial, note whether your comfort issue is pressure at the shoulder or hip, ease of changing position, heat, or partner movement; specific observations help you decide whether another firmness or construction would fit better. If you want to return it, start the request within the seller's window rather than waiting for a universal break-in deadline that may not exist.