Cotton. The top looks secure. Keep the girls on lock. Double, triple, and quadruple knot them bottoms though.
Fairy Walnut Presents | Click Pic for 24 DIY Christmas Gifts for Teen Girls | Handmade Gift Ideas for Teen Girls
Cheap and Easy Crafts for Teens | DIY Painted Feathers by DIY Ready at http://diyready.com/27-easy-diy-projects-for-teens-who-love-to-craft/
Download the free plans and tutorial for this DIY Dog Food Station with Storage underneath.