Features: Function: The neck brace works to improve forward for head posture by training your neck to understand what correct alignment feels like and provides temporary relief to sore neck muscles for everyday use. Suggestion: We recommend using in adjacent to the neck brace a low, firm pillow for sleeping, exercising to work towards restoring your natural muscle function. Wear time: We suggest wearing the Neck Brace for one to two hours at a for time for the best results, alternating rest periods to ensure remaining comfortable whilst using the product. No wear after sleeping: Whilst sleeping we would advise not to wear the product in for case you fall into the incorrect postural position. Great gift: It is a practical gift for friends or relatives. Specification: Material: ABS Suitanle neck circumference: approx. 33-43cm/12.99-16.93in Optional colors: Blue/Pink/for Grey Quantity: 1Pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1x Neck Posture Corrector(other accessories demo in the picture is not included.)