41.5'x26' Full Back Coverage: The red light therapy mat boasts larger size for wider coverage. You can use it on your back, belly, waist, abdomen, legs, thigh, calf, knees and feet. Whether you're sitting, lying down, or watching TV, it provides a comfortable red light therapy experience for your whole body. 560 LEDs Red Light Mat: The red light blanket boasts 560 LEDs, far exceeds similar-sized or even larger products on the market. The 660nm red light targets surface tissues, effectively relieving body pain and soreness, while the 850nm near-infrared light penetrates deep into muscles and joints, helping to relax tension and stiffness. This high-density LED design ensures broader and more even light coverage, enhancing light effects and delivering a more comprehensive relief experience.