The "Style GT 3 (synthetic weft) 1B/" appears to be a reference to a specific type of hair weft, with the color 1B/ followed by an additional symbol that could indicate a color variation or other attribute .
Without more context on the meaning of this symbol, it is difficult to provide an accurate description.
However, here is a general description for a synthetic weft with color 1B:
"The Style GT 3 (1B) synthetic weft is a stylish and versatile option for your hair extension needs. Made with high quality materials, this weft is designed to provide a strong, durable foundation for creating wigs or custom hair extensions Color 1B is a deep, rich natural black, offering a classic, timeless look. With Style GT 3 (1B) synthetic weft, you can easily add length, volume or highlights to your hair. your hairstyle for an elegant and trendy look."
This description highlights the product's durability, quality, and specific color to help customers understand its features and benefits. If you have more information about the product or would like a more specific description, please feel free to provide additional details.