【Specification】 LaaVoo sew in hair extensions real human hair innovative different weight for different length, 80g for 12-14 inch, 100g for 16-22 inch.For products of the same weight, the longer the hair is, the thinner the extensions feel.2-3 packs are recommended for normal full head. | 【Advantage】 Wearing balayage hair extensions human hair sew in is a discreet way of adding more length and fullness to your style. They can conceal thinning areas or areas where you hair doesn’t grow and take your style from short to long, giving you the flexibility to change your style without waiting for your hair to grow. | 【Hold Firmly】 Sew in brown extensions are literally sew into your natural hair, so you don't have to worry about the extensions slipping or sliding away .Moreover, the bond between your hair extensions and your natural hair won't get loose either because there is a physical stitch to keep the extensions in place. This means they are pretty secure and reliable. | 【Double Weft】 LaaVoo human hair weft extensions has always used the double weft process, so that the hair is not easy to fall off and lasts longer. Due to this process feature, there will be small short hairs at the root of the hair weft. Please understand that it is normal. | 【Multiple Using Methods】 Weft hair extensions human hair will not limit your creativity in hairstyles and you can apply it in all kinds of ways,like directly sew in, or with clip in,with glue in and with micro link.It should always installed by a professionsl beacause the process is pretty complicated and draining. The hair needs to be braided correctly and only a professionsl can do that.