I bought this out of curiosity when the gua sha craze was at its peak on YouTube. It’s a reasonably priced product in the 5,000 won range on Coupang; it has a good grip, and since it’s transparent, you can easily see any dirt on it, making it easy to clean. After using it, I definitely feel a sense of relief in stiff areas like my neck and shoulders, but I think consistency is key.