【Breathable & Skin-friendly】 TeQsli twin hybrid spring mattress is made of 3D soft knit fabric on the top cover, breathable and skin-friendly. Ventilation mesh on the side of the mattress promotes heat dispersion and helps to efficiently regulate the body's temperature, ensuring a cool and comfortable sleep all night long. 【Memory Foam & Innerspring Hybrid】 TeQsli 12 inch twin size mattress combines memory foam with individually pocketed spring. The memory foam is Certipur-US certified to help distribute heat from your body. Individually pocketed springs balance the pressure on your body to keep your spine healthy. It allows you to sleep comfortably and have peace of mind. 【Motion Isolation & Edge Support】 Medium firm mattress is designed for all sleepers. Hundreds of individual pocket springs inside allows you to enjoy an undisturbed sleep even if your partner tosses and turns at night. This mattress provides sleepers with perfect head-to-toe support, with reinforced edge-to-edge support to prevent sagging and rolling.