Best Mattresses 2025 For Adjustable Beds. The best mattresses for side sleepers have the right balance of firmness, softness and pressure relief, according to experts. The sleep number i8 smart bed has adjustable firmness levels that make it ideal for couples with varying sleep preferences or as comfort needs change.
Best mattress for adjustable beds to buy in 2025: After testing dozens of beds, vetted experts chose the best mattresses of 2025 including the nectar.[+] premier copper, dreamcloud and brooklyn bedding.