The double-sided mattress Carl is the most popular type of foam mattress. The mattress is made from high-quality T25 polyurethane foam, which is covered on one side with seven-zone profile foam. The seven-zone foam, with its exceptional properties, ensures sleeping comfort regardless of sleeping position. The mattress is divided into 7 zones with varying degrees of firmness. These zones create a straight line for the spine. The mattress has hypoallergenic properties. The anti-allergenic quilted cover does not absorb allergens, which is beneficial for allergy sufferers. Additionally, the cover can be machine washed at 40 degrees Celsius, allowing for good sleep hygiene. The cover features a zipper, making it easy to remove and put back on.