YIYADO 12 Inch Twin Mattress in a Box with Memory Foam and Pocket Spring， Twin Size Mattress for Pressure Relief & Comfort Sleep & Zoned Support

【Targeted Support & Pressure Relief】The 12" hybrid design combines memory foam and pocket springs to provide balanced comfort and spinal alignment, while the medium-firm feel adapts to all sleep positions, making it ideal for back pain relief. 【Certified Safe & Non-Toxic】CertiPUR-US certified foam (free from harmful chemicals and low in VOCs). OEKO-TEX certified fabric (skin-safe and breathable). 【Stays Cool All Night】 Gel-infused memory foam prevents overheating, and the open-cell structure and coils improve airflow. 【Zero Partner Disturbance】Individually wrapped coils reduce motion transfer, so you won't be woken up by your partner moving around. Strong edges prevent sagging for long-lasting support. 【Easy Setup, Perfect Fit】It ships compressed in a box and expands quickly to its full size of 12". It fits full beds in bedrooms, dorms or guest rooms.