I purchased the Keratin RSD Wavy Hair Extensions from Diva Divine, and overall, I'm quite happy with the quality. The hair feels soft, and the wavy texture gives a really natural, effortless look. I especially like how well the extensions blend with my own hair and add volume without looking too heavy.
The only downside is that the waves need a little extra care to maintain their shape, and I noticed some slight tangling after a few washes. Other than that, the extensions look beautiful and are easy to style. Overall, a good purchase, and I would recommend them.