For convenient roll on dispensing, choose white HDPE cylinder bottles with white caps and natural roll on balls. The white HDPE plastic roll on containers are tall and slender for a comfortable hold when applying from all angles. The included white child resistant caps feature illustrated directions for opening, and ribbed sides for easy gripping. Natural roll on balls can be placed into the neck of the cylinders after filling and will remain securely in place during application. These plastic bottles could be a good packaging choice for liquid deodorants, medicines, and skin care products.