There are many series of red bean thermal underwear, and the performance is relatively balanced, and a set can be purchased within 200 yuan. It is more recommended for its cotton series, non-marking series and heating series.
 
There are two kinds of red bean cotton series: light and thin, medium and thick, both of which are woven from cotton and spandex, the light and thin models are mainly breathable, and the inner layer of the medium and thick models has stronger warmth. Cotton series skin-friendly and breathable, smooth texture, elastic fit, V-neck design without worrying about underwear exposure, but the anti-deformation ability is weak, there is also pilling phenomenon, according to the thickness of each set of prices between 80 yuan and 180 yuan.
 
The traceless series is also divided into light and thin and medium thick models, the light and thin models are made of viscose and spandex, with strong moisture absorption, good elasticity, and easy to wash and dry quickly, but the warmth is weak and easy to deform, and the medium and thick models increase 54% of acrylic to improve warmth, and the prices of the two models range from 150 yuan to 199 yuan.
 
The heating series is based on the same principle as UNIQLO HEATTECH, because the fabric itself does not heat up, and the phenomenon of moisture absorption itself will generate heat, and the source of heat is still human body temperature, which is not much mysterious. The fabric composition of the red bean heating series is the same as that of Uniqlo, but the acrylic fiber content that plays a role in keeping warm is lower, and the price of the set is 179 yuan-199 yuan, which has no outstanding advantages.