I would not recommend Hairvivi
I have evaluated three different models: Sophia, Vivian, and Bonnie. As size S is too small and size M is too large, I found it impossible to achieve a proper fit. Despite using a wig cap and a velvet grip band, the wig remains unstable and does not feel secure. In my opinion, the 'glueless' designation is inaccurate if one intends to move the hair back from the face. The parting is unnaturally wide due to excessive over-plucking, and there is a significant amount of 'return hair' (short flyaways) protruding from the crown. Furthermore, the hair quality is disappointing as it fails to retain any styling. I also found that the lace does not melt into the skin; it remains clearly visible along the hairline and the parting. Despite attempting various professional techniques, a natural appearance could not be achieved. Additionally, after only one month of use, a bald patch appeared near the fringe area. Given these issues with construction and longevity, I cannot categorize this as a high-quality product. If you prioritize a natural aesthetic and durability, I would not recommend Hairvivi.