Psi Bands pronounced "Sigh Bands" are drug-free wrist bands for the relief of nausea due to morning sickness from pregnancy, motion sickness, chemotherapy, and anesthesia. With Psi Bands, those who suffer from the common, yet debilitating condition of nausea can feel better – in style and comfort! PSI bands apply constant pressure to the P6 point on your wrist and works on acupressure principle.