For this maternity girdle we recommend you to 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 lower range of your measurement in order to plan for belly growth. S: 33-41" / 85-104cm belly circumference; M: 38-45" / 97-114cm belly circumference; L: 42-49" / 107-125cm belly circumference; XL: 46-54" / 116-137cm belly circumference; XXL: 52-60.5" / 131-154cm belly circumference. Double-sided hooks and loops band! The "hooks" side will stick to the abdominal pad and the "loops" side will receive the "hooks" side of the back support for more adhesion (see step 3 of instructions below) Measure belly growth! When you initially wear the belt, keep only the length of hooks and loops band that you need for adhering the back support to the abdominal pad (see step 2 of instructions below). When belly grows you will gradually stick the hooks and loops fabric more to the side of the abdominal pad, then you can cut the hooks and loops band that sticks out once again. The length that you cut equal the amount of belly growth! It is important for the abdominal pad to be as comfortable as possible. It is positioned a little above the pubic area under your belly and while walking it will move a little and rub on your belly. We understand this and have chosen a fabric that is cushioned, resistant and provides the best level of comfort! This product is designed for walking or standing position. When sitting, we recommend to detach the hooks and loops fabric for more comfort The fabric is constructed of a multi-layered laminate with an ELASTIC lining combining breathability, elasticity and comfort! The level of comfort of the back support is as important as the abdominal pad as it might rub on your back while walking/moving and will get hot and wet if not breathable. The Neotech Care maternity belt is highly breathable, comfortable and also provides the elasticity needed to hug your body's shape perfectly and give proper support for your lower back! Center the abdominal pad under your abdomen and attach with hooks and loops fabric with the desired level of support. Cut the hooks and loops band that is labelled "Cut the extra hooks and loops band you don't need" to keep a length that matches the border of the abdominal pad . The hooks and loops band should cover the abdominal pad but not more. As the belly grows and position of the hooks and loops fabric on abdominal pad changes, you might want to cut the hooks and loops band again (more explanations below). Attach the hooks and loops fabric of the back support to the location on the abdominal pad that provides the desired tension. To help keep the support in place and keep from sliding down, stretch the top strap over your stomach and attach both sides to the hooks and loops fabric on the back support 1) Use under the doctor’s advice, 2) Do not use on damaged skin, 3) Stop using if you have an allergic reactionBelly support, Waist support, Abdomen supportStatements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.