Specifications: Item Name: Winter Warm Lumbar Belt Material: Spandex Size: M, L SIZE M: Stretching Length 105-120cm(41-47''), Suitable for waist circumference 90-105cm(35-41'') SIZE L: Stretching Length 120-140cm(47-55''), Suitable for waist circumference 105-120cm(41-47'') Color: Black, Gray Feature: 1. High quality warm material and easier to use. 2. Two size and colors for you to select and meet your needs. 3. Keeps your kidney, abdominal and lower back warm during sports and outdoor activities. 4. Keeps you warm and cozy feeling for a long time. 5. Good for adults, elders and someone who has waist disease such as Rheumatism, lumbar muscle degeneration, acute lumbar muscle sprain, lumbar transverse process syndrome, etc. Package include: 1 * Unisex Winter Thicken Waist Warmer?Perfect for?Self-heating lumbar support belt can keep your lower back and abdomen warm at all times, even in cold weather, perfect for office workers, heavy laborers, drivers, the elderly, women, and those with low back discomfort, abdominal chills, and sciatica. ?Size?2 Sizes to select, meeting your different needs. M(Length/Stretching Length 105-120cm/41-47'', Suitable for waist circumference 90-105cm/35-41''), L(Length/Stretching Length 120-140cm/47-55'', Suitable for waist circumference 105-120cm/41-47''). ?Easy to Wear?Adjustable hook & loop design, 2 sizes to meet your need, can be adjusted by your own waist, provide a warm feeling in cold days! Lightweight and portable, easy to put on and take off. ?Material?Our waist warmer is made of quality spandex, thicken design, extra soft, warm, skin-friendly, so that your stomach and kidney will not be cold in the cold winter. ?Warm Care?Super warming and cozy, protecting waist and stomach from cold, which can help you relieve back pain, menstrual cramps, body fatigue, colds and gastrointestinal weakness. Perfect as a warming gift for your lover, parents, grandparents, friends, wife, husband as an ideal gift of birthday, New Year, Christmas, holiday, etc.