Kids Adult Heated Neck Brace Posture Correction Pain Relief Cervical Traction. Neck circumference: S: 20-33 cm/7.8-13 in, M: 33-43 cm/13-17 in, L: 43-53 cm/17-21 in. Features: -Pain Relief Neck Brace, this items uses far infrared heating and ergonomic design can be used for home therapy. Her or as a heated neck wrap. 3-speed temperature control and USB charging design to provide you with the most comfortable temperature and experience. Kids Adult Heated Neck Brace Posture Correction Pain Relief Cervical Traction Neck circumference: S: 20-33 cm/7.8-13 in, M: 33-43 cm/13-17 in, L: 43-53 cm/17-21 in Color: grey&blue Material: polyester, polyethylene Features: -Pain Relief Neck Brace, this items uses far infrared heating and ergonomic design can be used for home therapy, self-chiropractic posture correction, neck stretcher or as a heated neck wrap. 3-speed temperature control and USB charging design to provide you with the most comfortable temperature and experience Packing list: 1pc SKU: 249-166.