Twist ties (AKA wire ties) are for securing contents in a bag, such as plastic bags. They consist of a wire encased in a paper or plastic strip (AKA plastic ties) for easy tying or twisting to seal the bag. Generally, both paper and plastic ties are reusable. Ties vary by color or pattern, length, width, and package quantity. For more ways to seal poly bags, see our polybag sealers.