The head is called it \"the ZhuYang collect\". Medical study found mens discount sunglasses that, don't wear a hat of static state, in the wholesale baseball caps environment for 15 ℃ temperature, the quantity of heat of lost from the head of the human body 30% of the total quantity of heat, 4 ℃ when 60% of d&g sunglasses men the total quantity of heat dispersion. If the head cold, can cause cerebrovascular contraction, the light will be felt dizziness, headache, or cause a scalp and mens sunglasses sale hair follicles nutrition metabolic circulation problems function disorder, which can lead to hair nutrient unbalance Wholesale Hats or a large number of hair the fall off naturally. Serious still can oakley sunglasses sale induce some disease patronage. This shows, in cold winter, head and other parts of the body, as well as the need to keep warm cold.