Diastasis Rehab Splint® & Together Tape™ Sizing

Get the right size splint.

You will need to take two measurements to get your correct size for both the regular and short torso splint. To determine if you need a short torso splint, see #3 below.

1. Measure your back, from one side to the other side (where the side seam of a tight fitting garment would be) at the level below your breast. The pad size of the splint is the most important measurement. You do not want the pad of the splint to be too big. If it rests on the front of your belly it does not allow much room to pull the muscles together. You also do not want the pad to be too small or you will have trouble attaching the arms of the splint. The pad should be resting on your sides in the location where the side seam of a garment would be.

2. Measure the circumference of your body over your belly button. Measure in the evening when your belly is the largest. Your muscles should be relaxed when you measure. Waist size does not determine belly size.

3. Measure the distance between the bottom of your sternum to your belly button. If it is 5 inches or less than a short torso splint would be good for you. A short torso splint works well on people with a pear shaped body. This splint also can be worn by children.

If you do not have a measuring tape, measure with a piece of string and then measure the string with a ruler. Please look at the chart below. It gives your back size and circumference size. If your circumference size is larger than the range on the chart, then the arms of the splint need to be longer. For this reason we have developed Extenders. They velcro on to the ends of each of the three arms to make them longer. These extenders are also ideal during pregnancy so you can wear your same splint during the second and third trimester. After a couple of weeks of doing the exercises your belly will become smaller and the elastic arms of your splint may become longer. Just put a hem in the arms to make them smaller.

If you still have questions relating to the splint, please read our FAQ Page.

Since you are wearing your splint 24/7, you may want to buy a second splint so you can wear one and then wash one. While buying this package, if you wish to purchase a second splint, please use code:WEARONEWASHONE at checkout to receive a $5 discount.

Click here for instructions on how to put the splint on.

Click here for instruction on how to convert your Diastasis Rehab Splint® to a Short Torso Splint.

Measuring back size

Measuring body circumference over belly button

Measuring waist height from bottom of sternum to belly button


Back Size

Circumference of body
(over bellybutton)

Splint Size

Circumference size larger than # on chart, need Extenders to make arms longer



Extra Small

28" or higher




35 or higher




39" or higher




43" or higher



Extra Large

47" or higher

This information is shown as a guide only and not a guarantee. Actual fitting may vary.

Determine Your Diastasis Rehab Splint ® & Together Tape™ Size

2-4 fingers 4-6 centimeters SMALL
4-6 fingers 6-8 centimeters MEDIUM
7 or more fingers 9 or more centimeters LARGE


Sizing for the tape is determined by the size of your diastasis size. You check your diastasis in three places. The size may be different in these three locations.

The size is determined by the location wherever it is the largest.

Small: Diastasis up to 4 fingers wide (6 centimeters if you are using our Diastometer™ to measure)

Medium: Diastasis between 4 and 6 fingers (6 to 8 centimeters)

Large: Diastasis 7 fingers (9 centimeters) or larger