● Shipping Waterproofed with vinyl. Anonymous shipping ● Condition No noticeable stains. Please refrain from purchasing if you are concerned about minor imperfections. ● Official Description "Sleep" is the ultimate "self-maintenance" that brings health and work performance?! Out of approximately 600 employees a year at the 15 companies where I work as an industrial physician, about 70% suffer from severe health problems caused by lack of sleep! Mistakes at work / insufficient use of one's abilities / decline in evaluations... various "actual risks" that lack of sleep brings to working people. Professional know-how to achieve a "comfortable awakening" based on your genetic sleep type, so you don't lose out on life or your business career. By knowing your "chronotype (morning type, night type, free-running type)" and getting good quality sleep, a life and work that aren't going well will quickly improve!"