Hemo Womens Night Cap Beanie Hat Sleeping Indoor Wear Hair health Made in 100% mulberry plain silk Hand wash or dry clean Import With cap sleep can keep your head temperature, reducing heat loss (77% body heat dissipation from the head), which can prevent colds. Physiologists study confirmed that wearing socks to bed wearing a hat person, leg and head and neck vessels were diastolic state, blood smooth, can fall asleep quickly, many patients often intractable insomnia without medication