I ordered the Vivien Real Hair Extensions in the color # 1-18in and # 2-16in Unfortunately, it doesn't match my hair color, but Claire helped me try another color 1b and am very satisfied with all of this. This is a stretched remy hair with a colour that really looks very natural and very similar to my own hair tone. According to the manufacturer, they are shades of colour between jet black and arkest brown. Personally, I like the color very much. I am therefore very satisfied in this respect.Compared to similar extensions you get from other brands, you can find the best customer service. As long as you send your questions, their customer service will reply to you ASAP. They always want to solve problems for you and want to make a good impression. As for the The Vivien hair extensions, it is smoothly and lightly. I would describe the comfort of wearing it personally as pleasant, because I wore it and hardly felt it on my scalp!:)The clip ins make a good impression and the hair structure looks shiny and well maintained when I recieved it. You get various wide tracks with practical clip system for attachment. For me, this rather simple system is still the best. The clips can be easily attached to the hair. You can do that without help yourself. The product description also includes appropriate videos. At first you might want to use a mirror to help. Later you have the snap out quickly and the insertion of the tracks goes very quickly. Before using, you can comb every single track well or brush to prevent a fork. In the evening before going to sleep, the extensions must be removed in any case, otherwise they will spoil completely and are no longer usable. Basically, the real hair can be styled just as much as your own hair. Dyeing can also be carried out if it is not appropriate.All in all, I am satisfied and recommend the Vivien Human Hair extensions. And The manufacturer might be able to provide a most suitable solution if you have questions. For the overall impression I round up 4.5 stars to full five stars.