1. Free adjustment of height. Dear, have you ever had such experience? Sometimes, the pillow you bought is too short or too low. As the pillow is too short or too low, it is very uncomfortable after sleeping.
2. Ventilated breathe freely, Warm in winter and cool in summer: Hollow three-dimensional structure, Up and down double sides hole, Six ventilation, hollow three-dimensional structure form a small loop inside air layer, Human sleep up will feel dry in summer, And winter is warm benefits: Take away sweat and moisture, not stuffy moisture, Keep skin and material contact surface is dry, Not frequently move the body.
