SleepJoy 3-Inch ViscO2 Memory Foam Mattress Topper with High-Airflow Ventilated Design, Made in the USA &ndash; Twin Size INSTANT MATTRESS ENHANCEMENT: Easily upgrade your mattress with a luxurious layer of high-quality memory foam. When you experience the gentle contouring and pressure point relief, youll sleep deeper and wake refreshed. Imagine feeling like youre sleeping on a plush pillow top mattress, without the new mattress price. Its the best way to add comfort anywhere: in the dorm, guest room, or master suite. BREATHABLE DESIGN: Cooler sleep means deeper sleep, so we designed this mattress topper for maximum breathability. Our open-cell memory foam allows for the free flow of air throughout the entire sleep surface. And the ventilated design provides even more airflow for increased cooling. PREMIUM MEMORY FOAM: Our ViscO2 memory foam offers superior durability, holding its shape over time for years of enjoyment. Plus, ViscO2 is odor-neutral, thanks to our unique manufacturing process that eliminates the need to air the product out before use. That means you can use the mattress topper right away and sleep better on night one. MADE IN THE USA: We proudly manufacture this topper right here in the USA and adhere to all quality standards -- ensuring consistent delivery of a product you can trust. Overseas products may have fewer safeguards and unknown ingredients that can affect both safety and quality. We stand behind this product with a limited 2-year warranty and our US-based customer service team is here to answer any questions. FRIENDLIER TO THE ENVIRONMENT: You can sleep soundly knowing that what you purchased is friendlier to the environment than other products on the market. This memory foam topper is enhanced with plant-based materials derived from castor beans, which have a lower carbon footprint than traditional memory foam or soy-based foams. Our foam is certified by CertiPUR-US to meet standards for content, emissions and durability.