Why are there two sizes?
This is a sharing pack: 2 inch for kids or thin hair and 2.75 inch for long thick hair.
How do I choose the color?
You could choose hair pins similar to hair color so that the pins blend into the hair.
Is 100pcs hair pins easy to carry?
Yes, it comes with a carrying case so you can take it anywhere and the used up box can be used for other jewelry as well!