Adjustable Posture Corrector - Self-Heating Shirt

Adjustable Posture Corrector - Self-Heating Shirt will aid in correct back, shoulder, lumbar and Clavicle posture. This is the perfect product for daily usage as the fit is comfortable enough to wear under clothes.  Correct:  Cervical spine discomfort  Shoulder problems  Neck aches for sleeping positions  Confinement cold  Shoulder fatigue from bad posture  Cervical spine cold aches from cold temperature/air-conditioned rooms  Design:  Built-in magnetic hot packs Thermal dot-matrix sticker for double protection  Fluffy cloth  Thermal insulation  Front and back warmer  Usage:  Week 1: Adjustment period  Week 2: Retention period Week 3: Adaptation period * wear for at least 2 hours a day  Product Details:  Warm fabric  Breathable elastic band  Nanolattice  Power velcro  Recommended Sizes:  Medium = Height of 155 - 162 cm  Large  = Height of 163 - 170 cm  X-Large  = Height of 170 - 180 cm