Transform your mattress with the Renanim 3 in. Twin XL Gel Infused Memory Foam Mattress Topper. Designed with cooling gel infusion and ventilated channels, this topper promotes airflow and helps regulate temperature, ensuring a cool and refreshing sleep. The plush memory foam layer contours to your body, relieving pressure points on shoulders, back, and hips while providing long-lasting comfort and support. Whether you need to upgrade your dorm bed, refresh an old mattress, or simply add an extra layer of softness, the Renanim Twin XL mattress topper is the perfect solution. Easy to set up and designed to fit Twin XL beds, it's a cost-effective way to achieve hotel-like comfort at home or in your dorm room. Size: medium.