The Leward (TM) maternity support belt helps alleviate lower back pain due to pregnancy by supporting the lumbar and abdominal regions. Designed for those suffering from lower back pain due to pregnancy. It has 4 elastic side panels adding support and compression while allowing aeration. Beware of the copies of the NEOtech Care maternity belt on the market! M: 38-46" / 97-117cm belly circumference; L: 42-50" / 107-127cm belly circumference; XL: 46-55.5" / 116-141cm belly circumference; XXL: 52-61.5" / 131-157cm belly circumference. Instructions: 1. Wrap the abdominal lift attachment around your waist with the desired level of support. Position the pad so it is centered and under the abdomen. (Please refer to drawing provided for more visual indications); 2. Attach the belt to the pad and pull both elastic sides until the desired tension and attach the closure to the abdominal pad; 3. To help keep the support in place and keep from sliding down, stretch the top strap over your stomach and attach to the opposite side; 4. Adjust belt tension to make it comfortable. Please note: maternity belts are usually adjusted when in standing position which usually requires more support than when sitting. If you want to use it when sitting, you might have to readjust the belt's tension. Washing instructions: Fasten all closures. Hand wash in cool water with mild soap. Remove excess water and air dry away from heat. Wash as needed