Size: M Fourth Generation Lumbar Belt Lumbar Support "Heating Pad + Lumbar Belt" F.G.S Lumbar Corset Strong Lumbar Support Mesh Breathable Double Compression For Sports Work For Men and Women Fourth Generation Lumbar Support Wide Lumbar Belt + Heating Pad: Reflecting years of research and customer feedback, we have finally launched a new product, the F.G.S Lumbar Support, which is medical device certified [Medical Device Notification Number: 13B2X10479302021]. This product features an improved wide lumbar belt + heating pad to alleviate lower back pain. The heating pad is called a hot pack in hospitals and is used to warm the body and relieve discomfort. Its warmth is used to improve pain and other purposes. Using the F.G.S lumbar belt eliminates the need to frequently visit the hospital, allowing you to apply it yourself at home and save money. Overwhelming Fixation & 24cm Wide Design: The key points for reducing lower back discomfort are "ability to tighten firmly," "fixation after wearing," and "ease of putting on and taking off." The F.G.S Lumbar Support has four support pillars for strong support, making the wide type that firmly fixes the entire lower back reassuring. In addition, the 24cm wide design restricts twisting of the lower back while widely compressing from the upper back to the lower abdomen, firmly supporting from the lumbar vertebrae to the pelvis. Also, the wide design firmly fixes the lower back and prevents slippage. Mesh Material, Excellent Breathability & Double Compression Belt: For long-term use, it is important to be able to wear it comfortably. For this, good breathability is important. Mesh type efficiently releases excess heat, reducing the worry of stuffiness. Double belts provide firm fixation; the main belt and the auxiliary belt, with their double-belt design, prevent slippage even during vigorous movements and provide firm support.