Milliard Neoprene Adjustable Waist Trimmer Belt The Milliard Adjustable Waist Trimmer Belt is engineered from nylon and latex-free neoprene to be lightweight, flexible, and highly effective. The neoprene belt insulates the heat generated by your body to promote sweating of excessive water and to provide soothing relief to sore muscles. This adjustable waist trimmer is also designed provide advanced support to your lower back and abdominal muscles to help release pressure and ensure proper support and posture. This waist trimmer belt is an easy way to stimulate weight loss while exercising or simply when doing chores. Ideal for gym or home fitness! The belt stays in place to allow for comfortable workout. Wear under or over clothes. Adjustable belt fits up to 40 waist.