This is a device designed with protrusions to effectively stretch the neck and correct posture. - Type: Neck stretching device - Material: Plastic - Color: Black - Usage: Stretching, posture correction - Features: Design with protrusions - Size: Approximately 30cm x 15cm Thank you for viewing! This is a used item, so there may be minor scratches and signs of use. Please refrain from purchasing if you are concerned about this. Feel free to ask any questions you may have. We look forward to your purchase if you understand the condition! Thank you very much.