Maternity Pregnancy Belt: Supports extra pregnancy weight to reduce back discomfort by efficiently lowering spinal pressure.Lumbar Back Support Waist Band: Effectively prevent stretch marks, back pain, and support your back & waist. Comprehensive support is offered through a unique multi layered, ventilated soft laminate with elastic compression side panels.Medium Size (with Minimum or no stretch 80 cm - with Maximum stretch 110 cm)Maternity Support Belt provides relief of lower back and leg pain and discomfort during pregnancy by comfortably supporting the lumbar and abdominal regions. Comprehensive support is offered through a unique multi-layered, ventilated soft laminate withelastic compression side panels.The abdominal attachment provides lift without undesirable pressure and the lightweight, flexible stays in the belt helping keep the support in place to prevent rolling.The support belt helps many pregnant women to get relief from their back pain andother types of pains which often only show up during pregnancy.For this Belt we recommend you measure the circumference of your belly (from the lower back to the bottom of your belly which is around the area where the belt will be worn) and choose a belt according to the belt sizes in the description in the lowerrange of your measurement in order to plan for belly growth.