The 4-inch white memory foam extra-long twin mattress topper offers the perfect blend of comfort and support. Designed with a medium comfort level, this topper enhances your sleeping experience with its luxurious memory foam fill material. The breathable construction allows for excellent airflow, while its moisture-wicking properties keep you dry throughout the night. Additionally, the topper includes convenient straps for secure attachment and a removable cover that is machine washable for easy care. With a thickness of 3.9 inches and a pocket depth of 4 inches, it provides an ideal solution for those looking to upgrade their sleep surface. 80.00-inch h x 39.00-inch w x 3.90-inch d.