Because it is an industry norm. Should be in 2012 the national legal provisions of textiles and clothing instructions on the use of clear provisions, square dance clothing editorial analysis products for the composition of the size and washing items of the internal labeling of the uniform placement position is the left side. This position also does not affect the appearance and comfort of the clothes.
Left side labeling is called "durability labeling" (permanently attached to the product, and can remain clear and easy to read during the use of the product). According to the "Instructions for Use of Consumer Goods, Part 4: Textiles and Clothing" in RSA.4-2012, tops can generally be sewn on the middle and bottom of the left hemstitch, and bottoms can be sewn on the lower edge of the waistband lining or on the left side seam of the skirt or pants.
Related Information
Ordinary style clothing labels are on the left; uniforms and shirts are labeled according to gender on the left and right, where men's uniforms are on the right, women's uniforms are on the left. In addition, pants and skirts have different labeling locations, especially women's pants and skirts some labels are attached to the back, so the location depends on the specific style and design.
In fact, this label is not very comfortable to wear, but there are so many others are used to distinguish between the front and back, such as some solid-color basic bottoms, the lower left side of the label can be used to distinguish.