Product Name: Neck Supporter Corset [Supervised by Physical Therapist] Neck Supporter for Desk Work, Computers, Smartphones, Washable Cover x 2, Free Size, Unisex, Black, Sapo-Aid ●Product Details● Condition: Unused Color: Black Size: Free Size This item is unused, only opened for confirmation. [Quoted from Rakuten.] ＼ Your neck will feel surprisingly better! Eliminate hunchback, straight neck, and smartphone neck! ／ [Includes a stretch guide for those with neck fatigue from computers and smartphones] Supervised by Dr. Sasabe, we introduce easy stretches for neck fatigue. [Includes replacement covers] In response to customer feedback, we have included replacement covers. [Excellent breathability] It is processed to significantly reduce stuffiness during wear, allowing for long-term use. [Double-layer cushion] The double-layered cushion gently supports the neck. [Washable] It can be washed, so you can always use it clean. You can improve concerns about dirt and odor from long-term use and use it more comfortably.