Best Abdominal Compression for Moms?

I’m looking for a waist binder that would fit constant moving with a toddler. I was diagnosed with POTS after having my daughter, but with summer coming up I can’t rely on my full bodysuits for compression. I’m still fairly new to the POTS world and I 100% need abdominal compression than leg. It’s been hard trying to keep my heart rate within a certain range (I’m currently on no medications, and doing lifestyle changes with salt, water, and the CHOP protocol).

Any recommendations for this? I need something moveable, so no full on corsets. I appreciate the help!