The first smart undergarment that teaches the right posture
The Percko is an undershirt lined with tensors in the shape of your back with the idea of good posture in mind. When you’re sitting up straight, you don’t feel a thing. But when you hunch, slouch or move in any way that’s bad for your back, you’ll feel a slight stimulation in the right direction, letting you know you’ve got to re-adjust.

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