Ecourban Adjustable Waist Trimmer Belt (2 colors for Men&Women) HIGH QUALITY MATERIALS: High quality neoprene covered with Lycra inner lining and Japanese OK Fabric. PROTECT AND REDUCE THE RISK OF INJURY: It is recommended for victims of back and lumbar trauma. If you find yourself having regular back pains, poor posture or just a really bad pain at the end of the work day, This Adjustable Waist Trimmer Belt will offer you the extra support to help you to stand up straight by removing the pressure on your back and relieving sore muscles. FASTER FAT BURNING HEAT It will keep the heat around your waist, and well increasing circulation in abdominal area and prompt stimulating toxins loss during fitness activity, for burning more calories. SKIN FRIENDLY AND NO SLIPPING Our Waist Trimmer Belt is made of new high quality three-dimensional structure neoprene, with great breathability and shape support; The Lycra inner lining will more skin friendly and prevent moisture absorption well; the Japanese OK Fabric and Adjustable Velcro closure fitting waist up to 41.7 inches and 8.7 inches wide, with no pilling. EXTREMELY COMFORTABLE: 0.2 inches thick offer you extremely comfortable experience without overstaffed.