Description For better sleep, bedding Advwin Spring Hybrid Mattress is the perfect choice. This mediumfirm mattress offers the perfect balance.not too hard and not too soft, just right. Offering a stable spring system and breathable, highly resilience foam, the mattress guarantees a comfortable sleep experience, and the ergonomic design keeps the spine aligned, ensuring that your back is properly supported throughout the night, reducing discomfort and promoting better posture.? Soft knitted fabric covers the surface to ensure comfortable sleeping. 0 allergenic and 99% dust mite resistant, durable. Turn your bedroom into a relaxing sanctuary.order your mattress today! 2Bulky items are usually dispatched within 13 working days. You can return the product to us within 15 days after receiving it.