Open-box, new item Note: Item comes without the original box but will be securely packed. Dual-Layer & Ventilated DesignThis 4-inch mattress topper features a dual-layer design, combining 2'' gel-infused memory foam and 2'' bamboo charcoal-infused memory foam. The cooling gel foam helps prevent overheating and maintains a cooler temperature compared to regular memory foam, while bamboo charcoal foam absorbs moisture and eliminates odors. The entire topper is crafted with a breathable open-cell ventilation design. Superior Support & Comfort High-density memory foam conforms to your bodys curves, evenly distributing weight to align the spine and relieve pressure points. It promotes ideal air circulation and reduces motion transfer, helping you fall asleep faster and stay asleep longer. Non-slip & Washable Cover The topper comes with a breathable, skin-friendly knitted fabric cover, offering silky smoothness and exceptional breathability. The removable cover is machi