About this item 【Ergonomic Dual-Layer Support】Queen mattress topper combines 150oz 7D down alternative + 150oz shredded memory foam, engineered through 1,000+ trials. Unlike rigid block foam toppers, our shredded memory foam dynamically conforms to every curve for full-body support in all sleep positions. 【3D Breathable Cooling System】LIANLAM’s 3D air-mesh technology boosts airflow by 200% vs regular toppers. Gel-infused memory foam actively dissipates heat, ideal for hot sleepers and down-sensitive users (anti-overheating mattress topper). 【Clinically Proven Back Pain Relief】7D down-alternative layer evenly distributes weight while shredded foam targets lumbar support. Lab tests show 73% reduced back discomfort after 28 nights (orthopedic mattress topper for spinal alignment). 【Baby-Safe Certifications】OEKO-TEX & CertiPUR-US certified. meaning we use only safe, high-quality materials. Our production facilities meet the highest cleanliness standards, ensuring a safe and healthy environment for everyone, including infants. 【Quick Fluff & Hassle-Free Care】Roll out and tumble dry on low for 20 mins/air dry 24hrs to activate loft. Removable cover is machine-washable. Anti-clumping memory foam stays resilient after washes (easy-clean mattress topper). See more product details