Two years ago I was filtering my water, reading every food label, buying clean beauty — and spending an hour a day sweating into plastic.

So I switched. Organic cotton, "conscious," "natural." The first pair went see-through the moment I bent over. The second sagged at the waist by lunchtime. The third still had spandex hidden in the blend, and I only found out because I read the tag.

The honest reason they fail: cotton alone won't hold its shape. So brands either spin plastic straight through the yarn — where it sits against your skin the whole workout — or they leave it out, and the legging bags at the knees. Every pair I'd bought was built to lose one of those two fights.

I wanted a legging that stayed opaque in a deep squat, kept the plastic off my skin, and printed every percentage on the tag.

I couldn't find that. So I built Sontivia :)