This hair fork is meant for folks with really thin hair. It provides approximately 4cm of "fork" to secure your hair. After some vigorous yard work, our tester said "It survived the thin hair test!" :)
To see what size of hairfork you need, we suggest putting your hair up with a pencil (as if the pencil is a hairstick) then mark the edges where it enters/exits your hair. Measure this distance, and choose that size of hairfork! Let us know if you require a size we do not have listed and we'll make it!\