Review (4/5): Pretty cool!
I have to keep my hair up for work but tight buns and heavy hair pieces give me a headache. I can use these two pieces with nothing else and keep a secure bun all day with no headache. I usually put my hair into a lose french braid (only about 4 cross overs) twist the braided tail into a bun and put one pin in the top and one in the side. I do think crossing the pins works better than one in the top and one in the bottom.
I have used it with wet or dry hair, it is a little more stable with wet hair.
My hair is fairly thin, I think thicker hair would need more pins. My hair is only about 8" past my shoulders. I have run with it up and it stays without a problem, then the nice thing is I can nap in them too, they ae not too heavy or bulky that they hurt your head.