See 2nd product picture for how to measure then refer to size chart in product description; Measure from around your lower back to under your belly; Do not choose according to your maternity pants or trousersFully adjustable to accommodate abdominal growth throughout pregnancy; Features new reinforced hooks and loops fabric fasteners65% Polyester, 17% Nylon, 18% ElastodieneHand Wash OnlyFastening: Hook & LoopNTC-T007 S BeigeBreathable fabric constructed of a multilayered laminate with an elastic liningDesigned for walking or standing position; Detach the hooks and loops fabric when sittingSupports the lower back by redistributing pressure more evenly on the surface area the back support coversSize Name: S | Colour Name: Black Promotions can vary depending on size name/colour name.