This hybrid queen mattress is designed to relieve lower back pain and improve sleeping posture, helping you enhance sleep quality. The reinforced lumbar support zone effectively corrects spinal alignment and reduces pressure on the hips, shoulders, and back, making it especially suitable for side and back sleepers. Made with CertiPUR-US certified foam and 100% fiberglass-free materials, the mattress ensures a restful and comfortable sleep every night. Featuring high-resilience individually pocketed springs, this hybrid mattress offers both conforming comfort and firm support, making it ideal for side and back sleepers who want pain relief without overheating. Free of harmful chemicals and fiberglass, the mattress combines safe, environmentally friendly materials with a breathable layer to regulate temperature and wick away moisture, keeping you comfortable all night long. Size: medium. Material: Polyester.