Have you ever bought silk clothes? The characteristics of silk are nothing more than luxurious luster, silky touch, excellent drape, etc. It is a fabric at the top of the pyramid, so do you know that silk can also be graded?

A little science today~

Silk, according to its quality and appearance, is divided into 6A, 5A, 4A, 3A, 2A, A, B, C, D, E, F grade and non-grade products. Different grades mean the different qualities of silk. We'll go into more detail below：

Grade A Silk

Grade A silk, top-grade silk, has long strands, contains almost no impurities and has a pearly white color with a healthy sheen to it. To hold the silk floss filling in place during the process of making grade A silk comforter, workers need to stitch the long silk floss filling to the edge of the comforter. This kind of comforter is simply two layers of fabric with a cloudy silk filling in the middle with even thickness all around.

Grade A silk has very few clumps of silk which will get clumpier and create air pockets in the nearby area over time. It will get clumpier when it gets rubbed over and over against cover fabrics, greatly diminishing the even warmness of a silk comforter. Since grade-A silk contains minimal clumps, you will feel warm all the time. However, silk comforter without clumps can maintain its initial silk floss batting structure, enhancing the longevity of silk comforter.

Grade B Silk

Grade B silk contains clumps. Grade B silk has some impurities and requires chemicals to make the silk look pearly white. Grade B silk has short strands. Silk comforter made of grade B silk needs stitching, diminishing the comfort of a silk comforter. Compared with grade A, grade B silk feels rough and lacks a natural sheen.

Grade C Silk

Grade C silk has short strands, lots of impurities with a cotton-like texture and yellowish color. Actually, grade C silk is the inner layer of silk and has short strands. It contains oil from the silkworm making it look yellow and often has brown dots. Stitching is necessary when making a comforter with grade C silk, which severely damages the breathability and lightness.

Grade D,E and F & those not eligible to rank

These are poor-quality silk fibers not suitable for silk bed linens and silk sleepwear.  Usually used for silk rugs, silk drapes, silk fans, etc.

Expensive first-tier brands usually choose 6A grade, which is the top match in silk.

Only when it is excellent in terms of gloss, fiber length, fiber elasticity, moisture absorption and breathability, can it be identified as 6A? It is the silk among the silks, the top among the tops, and is synonymous with "nobility"

Therefore, this kind of fabric has a silky touch like running water, light and smooth, skin-friendly and free of static electricity, and the body feeling is really wonderful when worn. Of course, this kind of fabric is also more expensive.