Stay comfortable and active throughout your pregnancy with the help of the Maternity FITsplint! Whether you are dealing with back pain, sciatic pain, bladder pressure, diastasis recti or just need proper support while running, the FITsplint can be worn 3 different ways to provide the proper support you need! 5 core exercises are also included to help keep the core strong and prepare for delivery. SIZING - Select by your pre-pregnancy waist size. The FITsplint will adjust throughout your entire pregnancy! If you are inbetween sizes, pick the larger size.