The delivery was fast, and I'm very satisfied with the discounted price and the good set. The shape looks like a hairpin we often see, but you just clip it where you want root volume, so it's quite simple to use. You can also use a blow dryer lightly on it, making it convenient to use according to the situation. The size is good for carrying, so it's great to take it with you when going out or traveling. Above all, the advantage is that it’s easy to use and creates root volume without any extra tools. The clip opens easily, so anyone can use it comfortably. After trying it, the best way I found was to clip it in while doing makeup, then take it out when finished, which worked best for me.