I made my own! With the help of my PT. I just made a lycra tube that narrowed at one end. It went from her waist down to her knees, tight but not too tight, then I sewed up the middle where her legs would go to make them like shorts. I would advice doing it under the direction of the PT, my originals were too short, and didn't cover the knees, and for Paige, this was important.
It only took like 20 minutes to make, and did the job!
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Kasey, mom to Paige (3!)