I agree there's no kink. I use a satin covered elastic and put my hair in a high ponytail. Then I roll the ponytail around my finger and pin the hair in place. This gives shape to the style once it's let down. If I want my hair fuller, I'll split the ponytail into two or more sections and roll and pin each one. (You can tell I'm not a fan of flat, pin-straight hair!)
Here's the kind of elastic I use.