Skin-friendly Cover: Aivermeil mattress cover features a skin-friendly Nanoparticle cover, which brings a soft touch and has good breathability. Our breathable mattress topper helps disperse the pressure on your body, keep you cozy, regulate your body temperature, and make you sleep more comfortably. Increase Comfort and Anti-Slip: Aivermeil memory foam mattress topper is a perfect addition to the mattress, which can increase softness and help disperse stress on your body, making you sleep more comfortably. Adjustable elastic straps and an anti-slip surface backing keep it securely in place, preventing any unwanted shifting. The convenient zipper closure allows for easy disassembly and washing. Certified Quality and Washable: Aivermeil bed toppers are CERTIPUR-US certified, ensuring low odor, high-quality materials, excellent performance, and durability.