Breathable mesh material ? Pigeon's unique side-open design allows you to easily attach and remove without turning your hand in the back. ? Double-sided auxiliary belt for easy adjustment of support even with weak forces. The Velcro strap on the maternity belt is firmly made to prevent it from coming off and is very durable. To wear the belt, use the inner mark to wrap the long main belt and then adjust the length of the belt with the shorter adjustment belt ? Lumbar support panel supports the burden of the lower back. 3D design that does not tighten to fit the rounds of your tummy. The inside that touches the stomach (skin side) is 100% cotton. ? Ergonomically designed, distributes weight evenly to provide comfort on your belly, wide belt for reduced constriction, makes walking easier, stretchy, prevents uterine prolapse, keeps fetus's position, reduces stress on the lower back.