In this pictorial we present a prototype of a novel personalized garment that provides rich haptic feedback for posture awareness in the context of repetitive strain injury (RSI). Unlike prior work concerned with posture correction, our aim was to design a garment that would allow the user to gain an awareness of his posture with a help of sensorial experiences. Collaboratively engaging the user as a co-designer in movement enactment, movement analysis and embodied co-design sessions enabled us to design a garment that offers posture awareness through playful and somaesthetic experience. We offer a reflective analysis of how our co-design approach enabled us to design for personalization, somaesthetics and playfulness in posture awareness.